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Costco and Sam’s Club can both lower the unit price of groceries and household supplies, but neither is automatically cheaper for every household. In the latest U.S. figures, Sam’s Club costs $5 less at the basic tier and $10 less at the premium tier, and an AARP comparison of 28 grocery items ranked Sam’s Club first on total price and Costco third. Your own winner depends on the brands, package sizes, local prices, waste, travel and rewards in your repeat-purchase basket.
The practical answer is to use Sam’s Club as the price-first starting point, then check your actual annual basket against Costco before joining or upgrading. The calculations below show how to do that without treating one published shopping list as a universal promise.
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At a glance
| Name | Best for | Key spec | Free plan / price | Checked |
|---|---|---|---|---|
| Sam’s Club Club | Lowest upfront fee and basic member pricing | Member-only prices, instant savings, fuel pricing, Scan & Go, eligible curbside pickup and a second household card | $60 per year | November 2026 |
| Costco Gold Star | Basic Costco access and a free household card | Paid membership with member pricing and one free household card | $65 per year | November 2026 |
| Sam’s Club Plus | Shoppers who can use rewards, shipping or delivery benefits | 2% Sam’s Cash on qualifying in-club purchases, up to the stated annual cap, plus listed Plus benefits | $120 per year | November 2026 |
| Costco Executive | High qualified spending and shoppers who use Executive benefits | 2% reward on qualified purchases, generally capped at $1,250 annually | $130 per year | November 2026 |
Prices checked November 2026.
U.S. prices and benefits are the figures available in the cited sources as of November 2026. Membership terms, exclusions and promotions can change.
What do Costco and Sam’s Club memberships cost?
Sam’s Club has the lower sticker price in both comparable tiers: Club is $60 annually versus $65 for Costco Gold Star, while Plus is $120 versus $130 for Costco Executive. That $5 or $10 difference matters most when your expected merchandise savings are small; it is not large enough to decide the comparison by itself for a household that spends thousands of dollars at a warehouse.
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| Comparable tier | Annual fee | Benefits relevant to a savings calculation |
|---|---|---|
| Sam’s Club Club | $60 | Basic access, member-only prices, instant savings, member fuel prices, Scan & Go, free curbside pickup for eligible orders over $50 and a second household card. |
| Costco Gold Star | $65 | Basic paid membership. Costco’s fiscal 2025 filing says every paid membership includes a free household card. |
| Sam’s Club Plus | $120 | Qualifying 2% Sam’s Cash on in-club purchases up to the stated cap, eligible shipping and delivery benefits, early shopping and other listed benefits. |
| Costco Executive | $130 | 2% reward on qualified purchases, with Costco’s filing giving a general maximum reward of $1,250 annually. |
See the Sam’s Club membership page and the Sam’s Club benefits help page for current terms. Costco’s fee and reward descriptions come from its fiscal 2025 annual report. These are U.S. memberships; prices in other countries are different.
Which warehouse club has the cheapest groceries?
Sam’s Club has the strongest result in the most recent broad comparison supplied here, but the evidence does not establish a permanent winner. AARP reported on September 3, 2026 that Sam’s Club had the lowest total in a 28-item grocery comparison, BJ’s was close behind and Costco ranked third. The accessible result reports the sample size and ranking but not itemized prices or the dollar gap, so no exact percentage or annual saving should be inferred from it.
A separate FinanceBuzz comparison updated November 10, 2026 found Sam’s Club lower on many of its listed grocery items, while Costco was cheaper for cashews on a per-ounce basis. It also reported a range of Costco bottled-water prices across locations and warned that prices and availability vary. That makes the article useful as an illustration of category differences, not as a nationally representative household budget.
The larger methodological lesson comes from a 2025 study by Washington Consumers’ Checkbook. Its 150-item market basket matched brands where possible, accounted for different package sizes and used unit prices to calculate equivalent basket quantities. The publisher cautioned that warehouse packages were usually larger and that spoiled or unused perishables can erase a nominal bulk discount. Its store prices are from 2025, so use the method rather than presenting those prices as current.
Why can the cheaper club change from one household to another?
Warehouse pricing is a basket problem, not a storewide slogan. A club can be less expensive on chicken, detergent and bottled water while the other wins on coffee, nuts or a specific brand. Your result changes again when a larger package is partly discarded, a sale ends, or the nearest club requires a separate fuel-consuming trip.
Package size and unit price
Compare dollars per ounce, pound, count, load or other useful unit. A 40-ounce package at $10 is $0.25 per ounce; a 64-ounce package at $14 is about $0.22 per ounce, but the second package is only a saving if the household uses the extra quantity. Record the exact size, not just the shelf total, because warehouse packs frequently differ from supermarket packs.
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Brands and acceptable substitutes
Decide in advance whether a store brand, a different roast, or a different concentration is an acceptable substitute. Matching a named brand gives a cleaner comparison; mixing a premium brand at one club with a private-label alternative at the other can make a low price look like a like-for-like saving when it is not.
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Waste, storage and frequency of use
Bulk economics fail when food expires, freezer space is unavailable or a household gets tired of a product. Estimate the quantity actually consumed before its use-by window. For nonperishables, include the value of storage space and the risk that a product is discontinued or changed before you finish it.
Local price and promotion differences
Warehouse prices, inventory and promotions can vary by location. Compare the club you would actually visit, and recheck sale prices before making a decision. A temporary instant-saving offer can reverse a trip’s result without changing the underlying membership economics.
Trip and convenience costs
Include extra mileage, parking, delivery charges or the value of time only when they are real alternatives for you. If a warehouse replaces a supermarket trip you already make, incremental travel may be close to zero. If it is a long detour for occasional bulk purchases, a lower shelf price may not cover the trip.
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How do you calculate which membership saves more?
Build the calculation from repeat purchases rather than an idealized one-time haul. A small, accurate basket is more useful than a long list of products your household rarely buys.
- List recurring purchases. Use several months of receipts or a planned list of staples such as meat, produce, coffee, paper goods, detergent, pet supplies and personal-care items.
- Set the specification. Write the brand or acceptable substitute, package size, flavor, concentration and quantity your household can realistically use.
- Record local prices. Capture the current in-club price at each candidate warehouse. If an online price differs from an in-club price, label the source and do not silently combine them.
- Convert to a common unit. Calculate price per ounce, pound, count or use. Then multiply that unit price by the quantity your household consumes, not necessarily the quantity in the warehouse package.
- Account for waste. Reduce the value of items you expect to throw away, or price only the usable quantity. A product that is 10% cheaper but 20% wasted is not a saving.
- Add the annual membership fee. Use $60 or $120 for Sam’s Club and $65 or $130 for Costco in this November 2026 comparison, then verify the live membership pages before purchase.
- Subtract only attainable rewards. Apply Sam’s Cash or Costco’s reward only to purchases that qualify under the current terms. Do not count a reward on excluded categories or spending you would not make.
- Value benefits conservatively. Count pickup, delivery, shipping, fuel, pharmacy or early-shopping benefits only when they replace a service you would otherwise buy or a trip you would otherwise make.
- Run a sensitivity check. Recalculate with sale prices removed, a lower usage estimate and one extra trip. If the winner changes easily, choose based on convenience or keep the cheaper basic tier rather than assuming a precise annual saving.
A simple worksheet can use this formula for each club: annual net cost = membership fee + merchandise spending + incremental trip or service costs − usable rewards − avoided service costs. Compare the two totals using the same household quantities. The lower number is your estimated value; it is not a guarantee because prices and terms move.
When does a premium membership pay for itself?
The reward-only break-even points are straightforward arithmetic, but they are not promises. Costco Executive costs $65 more than Gold Star. At a 2% reward rate, $3,250 in annual qualified purchases would produce $65 in rewards. Sam’s Club Plus costs $60 more than Club; at 2%, $3,000 of qualifying in-club purchases would produce $60 in Sam’s Cash.
| Upgrade | Extra annual fee | Illustrative qualified spending to offset the fee at 2% | Important qualification |
|---|---|---|---|
| Sam’s Club Club to Plus | $60 | $3,000 | Sam’s Club states that 2% Sam’s Cash applies to qualifying in-club purchases and is subject to a stated annual cap and exclusions. |
| Costco Gold Star to Executive | $65 | $3,250 | Costco’s filing describes a 2% reward on qualified purchases and a general maximum reward of $1,250 annually. |
The arithmetic assumes every dollar in the calculation qualifies and that the reward can be used under the program’s terms. Actual rewards can be lower because of exclusions, caps, returns or spending that does not qualify. Premium benefits such as eligible shipping, delivery, early shopping or fuel value can justify an upgrade below the reward-only threshold, but only if you would genuinely use them.
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Sam’s Club’s current benefits information specifies up to $750 per year in Sam’s Cash on qualifying in-club purchases. Costco’s general $1,250 maximum is from its fiscal 2025 filing. Check the current terms before relying on either figure, especially if most of your spending is online, on services or in categories excluded from rewards.
When is Sam’s Club the more likely value?
Sam’s Club is the logical first quote for a shopper focused on the lowest fee and a repeat basket similar to AARP’s 28-item comparison. The $60 Club tier leaves more room for a modest merchandise saving to cover membership, and its included Scan & Go, eligible curbside pickup and second household card can reduce friction for shoppers who already use those services.
Plus can make sense when your qualifying in-club purchases approach the reward break-even point, when eligible shipping or delivery replaces paid alternatives, or when early shopping has practical value. Do not upgrade solely because the reward rate is advertised: estimate qualified spending and apply the cap and exclusions first.
When could Costco be the better choice?
Costco can win when your particular brands and package sizes are cheaper there, when you use products in quantities that avoid waste, or when the warehouse is substantially more convenient. The FinanceBuzz example of lower cashew pricing at Costco shows why a category-level winner cannot answer every basket.
Executive can be sensible for a household with more than about $3,250 in annual qualified spending, provided the spending really qualifies and the household values Costco’s other benefits. A lower fee at Sam’s Club does not compensate for a consistently higher price on the products you buy most often, and a headline basket ranking does not override your local prices.
How should you treat fuel, pickup, delivery and shipping?
Separate merchandise savings from service value. Sam’s Club lists member fuel prices, Scan & Go and free curbside pickup for eligible orders over $50 among Club benefits, while Plus adds listed shipping and delivery benefits. Those features can be worth money when they replace a paid delivery charge or a separate errand, but they are not automatic cash discounts.
For fuel, count only the incremental gallons bought at the club and compare the actual route with the next-best station. Do not drive farther solely to chase a small per-gallon difference. For pickup or delivery, use the fee you would otherwise pay and the trips you would otherwise take; a service you never use has zero value in the comparison.
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What are the biggest mistakes in a bulk-membership comparison?
- Using shelf totals instead of unit prices: A larger box can look expensive even when its unit cost is lower, or look cheap when much of it will be wasted.
- Comparing different products: Different brands, concentrations, cuts or quality levels can invalidate a nominal price win.
- Assuming one study predicts your year: AARP’s 28-item result and FinanceBuzz’s illustrative categories are snapshots, not a personalized forecast.
- Ignoring perishables: Spoilage can erase a bulk discount, the concern highlighted by Washington Consumers’ Checkbook.
- Counting all rewards as guaranteed: Only qualifying purchases earn rewards, and caps, exclusions and terms apply.
- Forgetting the fee: A club must first recover its annual membership cost before merchandise savings become net savings.
- Overvaluing a distant warehouse: Mileage, time and fuel can outweigh a small shelf-price advantage.
- Relying on outdated fees: Membership prices change. The figures here are the U.S. prices checked for November 2026, not a promise that they will remain unchanged.
What is the simplest decision rule?
Start with the basic tier at the club that has the lower total for your repeat basket after adding the fee. In the current published evidence, that starting point is Sam’s Club because it has the lower basic fee and won the cited 28-item AARP basket. Move to Costco if your own unit-price sheet shows a lower net total there, or choose a premium tier only after your qualified spending and usable benefits justify the extra fee.
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How we picked the comparison criteria
The comparison uses the current U.S. membership fees and benefit descriptions supplied by Sam’s Club and Costco, the 28-item AARP price ranking, FinanceBuzz’s location-sensitive category examples and Washington Consumers’ Checkbook’s 150-item unit-price methodology. Criteria were limited to factors that can change a household’s net cost: annual fee, qualifying rewards, package-size-adjusted price, waste, local variation and the real value of services a shopper would otherwise pay for. No in-house testing or benchmarking was performed.
Frequently asked questions
Can two adults share one warehouse membership?
Both programs provide a second card intended for a household member. Costco’s annual report explicitly says all paid memberships include a free household card, while Sam’s Club lists a second household card with Club membership. Confirm the current household eligibility and cardholder rules when enrolling, because those terms can change.
Are warehouse-club prices the same at every location?
No. The FinanceBuzz comparison noted variation in Costco bottled-water prices and availability across locations, and promotions can differ as well. Use the warehouse you would actually visit and treat an online listing as a separate price source unless the club confirms it applies in-club.
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Not necessarily. Bulk can work for shelf-stable goods, freezer-friendly items and products with predictable use, while perishables and novelty purchases carry greater waste risk. Price the usable quantity and storage burden rather than assuming the largest package is the best value.
What if my estimated savings are only a few dollars?
Keep the basic membership, delay joining or choose the club that requires less extra travel. A narrow projected margin can disappear through one spoiled package, a missed promotion or an unplanned trip, so convenience and flexibility are reasonable tie-breakers.
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How often should I recalculate the choice?
Recheck when a membership renews, the annual fee changes, your household size changes or your main brands move between clubs. A short basket of current prices is enough; you do not need to rebuild a 150-item market basket every time.
Frequently Asked Questions
Can two adults share one warehouse membership?
Both programs provide a second card intended for a household member. Costco’s annual report says paid memberships include a free household card, while Sam’s Club lists a second household card with Club membership; verify current eligibility rules at enrollment.
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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsAre warehouse-club prices the same at every location?
No. Prices, inventory and promotions can vary by location. Compare the warehouse you would actually visit and treat online prices as a separate source unless the club confirms they apply in-club.
Should a small household avoid buying in bulk?
Not automatically. Bulk often works for shelf-stable or freezer-friendly goods, but perishables can create waste. Compare the cost of the quantity you will use, including storage and spoilage.
What if my estimated savings are only a few dollars?
A thin margin can disappear through one wasted package, changed promotion or extra trip. Keeping the basic tier or choosing the more convenient warehouse may be safer than paying for a premium plan.
How often should I recalculate the choice?
Recheck at renewal, after a fee change or when your household and buying patterns change. A short list of current repeat purchases is usually sufficient.
