Head-to-head test
EcoFlow DELTA 2 vs BLUETTI AC180P
The AC180P holds 416Wh more than the DELTA 2 for $120 more and still ends up cheaper per kWh over its life — the only real case for the DELTA 2 is its expansion port, which is genuine, unlike the AC180P's.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
DELTA 2
3,128Power Score · Appliance Class
$499.00 list · direct from EcoFlow
BLUETTI
AC180P
3,318Power Score · Appliance Class
$649.00 list · direct from BLUETTI
Spec deltas
Start with the tank: 1,024Wh in the EcoFlow DELTA 2, 1,440Wh in the BLUETTI AC180P, a 416Wh gap for $120 more ($479 vs $599). That alone would just be a bigger-battery-costs-more story, except the AC180P's larger battery also works out cheaper to run — $0.12 per lifetime kWh against the DELTA 2's $0.16.
The DELTA 2 has one card the AC180P can't match: it actually expands. EcoFlow's own battery ecosystem lets you add capacity to this exact unit later. The AC180P is sometimes marketed as expandable too, but owner testing confirms that's wrong — external batteries only recharge it through Power Bank Mode, they never join it as capacityB3. That's not a technicality; it's the difference between a unit that can grow and one that can't.
Everywhere else, the AC180P is simply the stronger buy: more capacity, a lower per-Wh cost ($0.42 vs $0.47), a longer cycle count (3,500 vs 3,000), and a quieter spec sheet (45dB vs 50dB). The DELTA 2 wins only if that expansion port is a feature you'll actually use.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
That's the opposite of the usual bigger-costs-more tradeoff: here the bigger unit is also the better deal per watt-hour, so treating the AC180P's higher sticker price as the expensive option gets the comparison backwards.
The AC180P costs $120 more but holds 416Wh more capacity than the DELTA 2Its lifetime cost still comes out lower: $0.12 per kWh over 5,040 lifetime kWh, versus the DELTA 2's $0.16 over 3,072
Why it mattersAnyone ruling out the AC180P purely on the $120 gap is optimizing for the wrong number; the DELTA 2 is the pricier unit once you count what you get for it.
A buyer choosing the AC180P specifically to grow into it later is buying a fixed 1,440Wh ceiling that will never move, no matter which BLUETTI battery they try to plug in.
The DELTA 2 is genuinely expandable through EcoFlow's own battery lineupThe AC180P does not accept true expansion batteries — B80, B230, and B300 units only recharge it via Power Bank Mode, they never add capacityB3
Why it mattersIf growth is the actual plan — more gear, longer trips, eventual home backup — the DELTA 2 is the only one of these two that can follow you there.
The AC180P finishes both jobs with a quarter to nearly half its tank still in reserve, the kind of margin that matters when the day runs long or the weather turns.
Remote Workday needs 910Wh: the DELTA 2 uses 105% of its capacity (it can't finish the day on one charge), the AC180P uses 74%Tailgate Party needs 670Wh: the DELTA 2 uses 77%, the AC180P 55%
Why it mattersAnyone whose typical use looks like a full workday or a loaded tailgate afternoon should size up to the AC180P; the DELTA 2 is built for lighter, shorter draws.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Remote Workday and Tailgate Party are where the capacity gap actually shows up in daily use; the DELTA 2 runs out mid-workday.
Weekend Camping, the 8-Hour Blackout, and Van Life Daily beat both units — neither is sized for a multi-day trip or a fridge-plus-router outage, so the 416Wh gap between them barely registers there. You need a bigger class of unit for any of those three jobs regardless of which one you're comparing.
The real split is Remote Workday and Tailgate Party, where the DELTA 2's smaller tank runs out of room and the AC180P doesn't. CPAP Overnight is close to a formality for both — 37% and 26% of capacity respectively — so that job alone doesn't justify the price gap either way.
Lifetime Value
Selected because: The AC180P is cheaper per lifetime kWh despite the higher sticker price — the core economic argument.
cost / lifetime kWh
Run the ownership math and the AC180P wins on every figure that matters: $0.12 per lifetime kWh against the DELTA 2's $0.16, and 5,040 total lifetime kWh delivered against 3,072. The extra 500 cycles (3,500 vs 3,000) and the bigger tank compound into a unit that's cheaper to run for as long as you own it.
The DELTA 2 is the cheaper unit to buy but the more expensive one to run. If total cost of ownership is the actual metric, the AC180P's $120 premium pays for itself in the per-kWh rate alone, before the capacity gap even enters the picture.
What the Specs Don't Tell You
Selected because: The fake-expansion claim on the AC180P and the real noise gap between the two are the concrete tiebreakers.
rated cycles
The AC180P is occasionally listed as expandable. It isn't. Owner testing confirms it doesn't accept true capacity-expansion batteries — it only ever gets charged by them, through Power Bank Mode, never joined by themB3. That's expansion in name only, and it's worth ruling out before anyone buys the AC180P expecting the DELTA 2's growth path.
Noise runs the other direction: the AC180P's 45dB spec beats the DELTA 2's 50dB, and owner testing on the DELTA 2 backs that gap up — its fans trigger above 120W and hold at 48-55dB continuously once load climbs to 1,500-1,800WA1. Anything drawing more than a phone charger in a quiet room will announce itself.
Growth Path
Selected because: The DELTA 2's one genuine advantage — real expansion versus the AC180P's closed system.
This is the DELTA 2's one real structural edge. EcoFlow's ecosystem lets you add battery capacity to this exact unit later without replacing the base station — a genuine long-term option the AC180P does not have at any price.
The AC180P's ceiling is fixed the day you buy it: 1,440Wh, permanently. If your power needs are stable, that's irrelevant. If you expect them to grow, the DELTA 2's expansion path is the only one of these two that can absorb it.
Strengths & trade-offs
EcoFlow DELTA 2
Strengths
- +Costs $150 less
- +Lighter by 8.3 lb
Trade-offs
- –No major technical downsides compared to rival.
BLUETTI AC180P
Strengths
- +Larger battery capacity
Trade-offs
- –Substantially more expensive (+$150) than the DELTA 2.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Neither unit can fully handle this scenario (needs 2,100Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Neither unit
Neither unit can fully handle this scenario (needs 1,645Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
AC180P
A light job for both — the DELTA 2 uses 37% of its tank, the AC180P 26%. Neither unit is stressed here, so this scenario alone isn't a reason to pay more for either one.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
AC180P
The DELTA 2 comes up short here — a modeled workday needs 910Wh, which is 105% of its 1,024Wh tank, meaning it won't finish the day on one charge. The AC180P covers the same day at 74%, with a real cushion left.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
AC180P
Both units handle a tailgate afternoon, but the AC180P does it with roughly twice the reserve capacity of the DELTA 2 relative to what's needed. If the afternoon runs long, that's the buffer that matters.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the six scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: AC180P runs 6h vs 4.2h.
$649 list · direct from BLUETTI
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–81.6hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–16.3hHigh-Draw Appliances
These reveal the real limitsscale 0–1.2h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
July 14, 2026
Verdict: the BLUETTI AC180P
On raw numbers this isn't close: the AC180P delivers 5,040 lifetime kWh against the DELTA 2's 3,072, at $0.12 per kWh versus $0.16, and it wins three of the six modeled scenarios outright (CPAP Overnight, Remote Workday, Tailgate Party) while merely tying the other three losses the DELTA 2 also fails. The honest counterweight is expansion: the DELTA 2 is genuinely expandable through EcoFlow's own battery ecosystem, while the AC180P's occasional 'expandable' listing is wrong — it only accepts external batteries as a charging source, never as added capacityB3. Buy the AC180P for the bigger, cheaper-to-run tank; buy the DELTA 2 only if you specifically plan to bolt on real capacity later and can live with a smaller box and a louder fan until then.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 14, 2026. The links below open EcoFlow's and BLUETTI's current prices.
$649.00 list · direct from BLUETTI
or check the DELTA 2 price$499.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 14, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 2 rates 4.0/5 (39th percentile of 24 Everyday-class units), and AC180P rates 4.0/5 (43rd percentile of 24 Everyday-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
45dB vs a Fan That Introduces Itself at 120W
The AC180P's 45dB spec is the quieter number on paper, and field testing on the DELTA 2 explains why the gap is real in practice: its fans trigger above 120W and hold in the high-40s to mid-50s dB continuously once load climbs toward its 1,800W ceiling. Neither unit is loud at idle; the difference shows up the moment you actually draw power.
The AC180P's 'Expandable' Label Doesn't Hold Up
Some listings mark the AC180P as expandable. Real-world testing says otherwise: it can be charged by external batteries through Power Bank Mode, but it never gains capacity from them. The DELTA 2's expansion path is the real thing — batteries that add to its total, not just top it off.
Same Warranty Term, Different Yearly Cost
Both units carry a 5-year warranty, but the cost per warranty-year splits at $96 for the DELTA 2 and $120 for the AC180P — purely a function of the higher sticker price, not unequal coverage. The DELTA 2 is the better warranty-dollar deal in isolation; it just comes attached to a smaller, pricier-per-kWh battery.
Ownership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The DELTA 2 is cheaper to buy, but the AC180P is cheaper to own. At $0.13/kWh over its lifetime vs $0.16/kWh, the AC180P's higher cycle life and capacity make each dollar go further over the years.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. Supports up to 180kWh modular expansion with DELTA Pro Ultra X.
Worth knowing
The Oct 2025 DELTA Max 2000 recall (overheating/fire risk, 6 incidents) is worth noting. Also tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
BLUETTI
Ecosystem
One of the broadest lineups — 15-20+ models from budget (AC2A) to flagship (Apex 300, 3072Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
The most inconsistent support in the space. Heavily email-based with China timezone delays. Some users get smooth, efficient service; others report weeks of troubleshooting runarounds, being offered discounts on new units instead of repairs, and confusing third-party purchase claim processes. Buying direct from Bluetti's website tends to produce better support outcomes.
Community
Active and growing — Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android — tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available — several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. Full LFP standardization across lineup (3,500-6,000+ cycles). Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable — no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while BLUETTI competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
DELTA 2
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,024Wh.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
AC180P
FIXED CAPACITYFixed at 1,440Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Don't read the DELTA 2's expandability as a straight win here: it starts at 1,024Wh, below the AC180P's 1,440Wh, so a first expansion battery largely buys back capacity the AC180P already includes. It only pulls ahead if you'd grow past 1,440Wh — short of that, the AC180P's larger fixed capacity is the simpler value.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 2
Field testing over 18 months credits the DELTA 2 with fast charging, reliable LiFePO4 cells, and real expandabilityA3 — the reputation that makes it a fair fight against a unit with 416Wh more capacity.
The recurring complaint is fan noise: cross about 120W and the fans introduce themselves, holding at 48-55dB continuously once load climbs into the 1,500-1,800W rangeA1, and one reviewer described 1,200W charging as sounding like a gaming laptop under load, though the app lets you throttle charge speed to quiet it downA2. EcoFlow has reportedly targeted the issue for a firmware fix, the way it has for other models after launchA4.
“When charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.”
Sources
portablepowerlab.com
BLUETTI AC180P
The AC180P holds a 4.6-star rating across 708 verified purchasers, with reviewers specifically confirming its Turbo Charge feature — 0-80% in about 45 minutes — held up in real testing, alongside a Power Lifting Mode that pushes 2,700W for higher-draw devicesB2.
The clarification worth repeating: despite some listings calling it expandable, it does not accept true expansion batteries like the B80, B230, or B300 — those units only recharge it via Power Bank Mode, they don't add capacityB3. At roughly 35 lbs, reviewers call it manageable for car camping but more of a haul for carrying any real distanceB4.
“Delivers 1,440Wh of LiFePO4 capacity and 1,800W continuous output, with a Turbo Charge feature reaching 0-80% in roughly 45 minutes and a Power Lifting Mode that delivers 2,700W to run high-powered devices.”
Sources
backuppowerhub.com · bluettipower.com · batteryskills.com · the-gadgeteer.com · bestgeneratorsolar.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Fan noise under moderate-to-high load is the dominant, repeatedly-cited complaint; the fan spins up above ~120W. [DELTA 2 · 3 entries]
- Fast Turbo charging, strong owner ratings, and a useful Power Lifting Mode are the praise; the key clarification is that it does NOT accept true battery expansion despite some listings. [AC180P · 3 entries]
- A1
“Fans trigger at anything above 120 watts; at maximum load (1,500–1,800W) they run continuously at ~48–55 dB. Powering medical equipment above 120W in a bedroom means listening to the fans or running an extension cable out of the room.”
portablepowerlab.com — EcoFlow Delta 2 Review: 6 Months of Real Use; PCWorld — EcoFlow Delta 2 review · 2026 · [negative]
- A2
“When charging at 1200W the fans sound like a gaming laptop, though you can lower the charging speed in the app to silence it.”
PCWorld — EcoFlow Delta 2 power station review · 2026 · [mixed]
- A3
“After 18 months of real-world testing through multiple power outages, camping trips, and daily home-office use, the unit earned recognition for fast charging, reliable LiFePO4 battery chemistry, and expandability.”
portablepowerlab.com — EcoFlow Delta 2 Review: 6 Months of Real Use · 2026 · [positive]
- A4
“EcoFlow officials indicated they plan to address the fan noise in an upcoming firmware update, as they have for other models after release.”
portablepowerlab.com — EcoFlow Delta 2 Review · 2026 (dated claim — may be partially addressed) · [mixed]
- B2
“Holds a strong 4.6-star rating from 708 verified Amazon purchasers; reviewers confirm the 0-80% in 45 minutes claim held true in testing.”
batteryskills.com / the-gadgeteer.com — AC180P review · 2025-2026 · [positive]
- B3
“Does not include a battery expansion port and does not support capacity expansion with B80, B230, or B300 batteries — contrary to some listings — though it can be charged by such batteries through Power Bank Mode.”
bestgeneratorsolar.com / backuppowerhub.com — AC180P buyer's guide · 2025-2026 · [mixed]
- B4
“Weight is cited around 35 lbs in most listings (one source lists ~28.7 lbs) — manageable for base camp or car camping, more of a constraint for backpacking or carrying any distance.”
backuppowerhub.com / batteryskills.com — AC180P review · 2025-2026 · [mixed]
Research compiled July 14, 2026.
Who Should Buy Which
Buy the DELTA 2 if you…
- →You specifically plan to expand capacity later and want a unit with a real path to do it, not a fixed box.
- →Your typical draw is light — a CPAP overnight or short outage — where the smaller tank never gets tested.
Buy the AC180P if you…
- →Your typical day looks like a full remote workday or a loaded tailgate setup, where the DELTA 2 runs past 100% and the AC180P still has a quarter tank left.
- →You want the lower cost per kWh over the life of the unit and don't need to expand past 1,440Wh.
If neither fits
If your real need is a two-night camping trip (about 2,100Wh) or an 8-hour multi-appliance blackout (about 1,645Wh), both of these fall short — they land between 134% and 241% of what's needed. Look at a bigger-capacity unit in either brand's lineup instead of choosing between these two.
The Bottom Line
The AC180P wins this on capacity, cost per kWh, and quiet running — 1,440Wh for $0.12 per lifetime kWh against the DELTA 2's 1,024Wh at $0.16, with a 45dB spec that beats the DELTA 2's fan-noise reality under load. That's the stronger buy for most people comparing these two.
The DELTA 2 keeps exactly one advantage: it actually expands, where the AC180P's expansion claim doesn't survive contact with owner testingB3. Buy the DELTA 2 only if that growth path is the point; otherwise the AC180P is the bigger, cheaper-to-run box.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI AC180P actually expandable?
No, despite some listings implying otherwise. Owner testing confirms it doesn't accept true expansion batteries like the B80, B230, or B300 — those units can only recharge it through Power Bank Mode, they never add capacity. The EcoFlow DELTA 2, by contrast, does have a genuine expansion path through EcoFlow's own battery ecosystem.
Which one is cheaper to own over time?
The AC180P, even though it costs $120 more upfront. It works out to $0.12 per lifetime kWh against the DELTA 2's $0.16, delivering 5,040 total lifetime kWh versus 3,072. The bigger battery and higher cycle count (3,500 vs 3,000) both push the economics in its favor.
Which is quieter under load?
The AC180P, by spec (45dB vs 50dB) and by owner report — the DELTA 2's fans trigger above 120W and run continuously at 48-55dB once load climbs past 1,500W. Anything beyond light device charging in a quiet room will be audible on the DELTA 2.
Can the DELTA 2 handle a full remote workday?
Barely, and not comfortably. A modeled remote workday needing 910Wh uses 105% of the DELTA 2's 1,024Wh capacity, meaning it runs out before the day's done. The AC180P handles the same day at 74% of its 1,440Wh tank, with real margin left over.
Which one should I actually buy?
Take the AC180P unless you specifically need to expand capacity later — it's cheaper per kWh, quieter, and wins the scenarios where these two units actually diverge. Take the DELTA 2 only if that expansion path is a real plan, not a maybe, since it's the one feature the AC180P can't offer at any price.
Where to buy
EcoFlow DELTA 2
$499.00
$499.00 list · direct from EcoFlow
BLUETTI AC180PPick
$649.00
$649.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.