Store comparison guide
Sam's Club vs Costco: Which Warehouse Club Is Better?
Compare Sam's Club vs Costco for membership value, Member's Mark vs Kirkland, groceries, paper goods, detergent, diapers, gas, tires, appliances, prepared foods, pickup, delivery, and unit prices.
. Editorial guidance is separated from the timestamped price evidence below.
Quick answer
Check Sam's Club first
For Member's Mark, Scan & Go, curbside pickup, club pickup, Instant Savings, Plus benefits, and Walmart-family shoppers who already like the Sam's app workflow.
Check Costco first
For Kirkland Signature, warehouse savings, Costco services, Executive rewards, curated appliances, travel, and members who prefer Costco's product mix.
Compare both
For paper towels, toilet paper, detergent, diapers, meat, prepared foods, gas, tires, appliances, batteries, and any recurring bulk item where unit price and membership value can flip the winner.
Retailer-policy claims are checked against the cited retailer sources and Price Scout's comparison methodology.
Source-backed evidence
Current normalized price sample
No compatible Sam's Club and Costco category pairs are currently available for the same reference ZIP. Price Scout does not fill that gap with an unsupported winner.
A winner is intentionally withheld until both retailers have compatible, source-backed products for the same market. Run a fresh item-level search when today's cart matters.
Compare a specific productMembership fees, Instant Savings, Executive rewards, gas, pickup, delivery, and online price differences are not deducted from product unit prices. Warehouse products are ranked only when normalized units are compatible. Package prices, coupons, memberships, delivery fees, and availability can still change the final checkout total. Read the full methodology or download the comparison JSON.
Sam's Club
Best for
- Member's Mark products, Instant Savings, Scan & Go, curbside pickup, club pickup, gas, tires, and bulk household staples
- Families comparing paper goods, detergent, diapers, snacks, drinks, meat, prepared foods, batteries, and pantry stock-ups
- Plus members who can use eligible Sam's Cash, shipping, delivery, early shopping, pharmacy, optical, or tire benefits
Watch-outs
- Most club value depends on a paid membership and local club availability.
- Online, club pickup, delivery, shipping, and in-club prices or availability can differ.
- Bulk packs can increase storage needs, waste risk, and the upfront checkout total.
Costco
Best for
- Kirkland Signature products, warehouse savings, gas, tires, appliances, travel, optical, pharmacy, and curated bulk stock-ups
- Households that value Costco's warehouse network, Executive rewards, and selected included service benefits
- High-use paper goods, household essentials, meat, prepared foods, batteries, patio, appliances, and seasonal buys
Watch-outs
- Most Costco shopping requires a paid annual membership.
- Warehouse, Costco.com, Same-Day, delivery, and business delivery prices can differ.
- The curated assortment may not carry the exact brand, size, flavor, model, or finish you want.
What to compare by category
| Category | Sam's Club angle | Costco angle | Scout tip |
|---|---|---|---|
| Membership and rewards | Club and Plus tiers can make sense when Instant Savings, Scan & Go, curbside pickup, gas, tires, and Plus perks match your routine. | Gold Star and Executive tiers can make sense when Kirkland products, warehouse savings, services, and qualifying Executive rewards match your routine. | Ignore limited-time signup offers until the end. First decide whether the standard annual value works for your actual basket. |
| Member's Mark vs Kirkland | Member's Mark is central for paper goods, pantry staples, prepared foods, meat, snacks, diapers, household products, and seasonal items. | Kirkland Signature is central for paper goods, food, batteries, pet, pharmacy-adjacent products, apparel, household staples, and select appliances or services. | Private labels are alternatives, not exact matches. Compare tier, ingredients, count, size, quality, and household preference. |
| Household essentials | Strong first check for paper towels, toilet paper, detergent, trash bags, batteries, wipes, diapers, snacks, and drinks. | Strong first check for paper goods, detergent, batteries, food stock-ups, pet products, trash bags, and household consumables. | Use cost per sheet, load, diaper, ounce, pound, battery, or bag instead of the package price. |
| Fresh, meat, and prepared foods | Can be especially useful for prepared meals, cafe trips, meat packs, produce, bakery, and family stock-ups tied to the local club. | Can be especially useful for rotisserie chicken, prepared foods, meat, produce, bakery, and curated fresh departments. | Fresh value depends on usable quantity, quality, storage, freezer space, and how fast the household eats it. |
| Gas, tires, appliances, and services | Worth checking for member fuel, tire and battery center savings, optical, pharmacy, appliances, grills, patio, and online shipping terms. | Worth checking for gas, tire center, optical, pharmacy, appliances, travel, installation-related offers, patio, and Costco Direct savings. | Only count a service benefit if your local club has it and you will use it more than once. |
| Pickup, delivery, and online orders | Curbside pickup, club pickup, shipping, delivery from club, Scan & Go, and Plus-specific terms can change the final value. | Warehouse shopping, Costco.com, Same-Day, Costco Grocery, and delivery options can show different item prices or fees. | Compare the same channel. A club shelf price, online shipped price, and same-day price are not automatically interchangeable. |
Membership and rewards
Sam's Club
Club and Plus tiers can make sense when Instant Savings, Scan & Go, curbside pickup, gas, tires, and Plus perks match your routine.
Costco
Gold Star and Executive tiers can make sense when Kirkland products, warehouse savings, services, and qualifying Executive rewards match your routine.
Scout tip
Ignore limited-time signup offers until the end. First decide whether the standard annual value works for your actual basket.
Member's Mark vs Kirkland
Sam's Club
Member's Mark is central for paper goods, pantry staples, prepared foods, meat, snacks, diapers, household products, and seasonal items.
Costco
Kirkland Signature is central for paper goods, food, batteries, pet, pharmacy-adjacent products, apparel, household staples, and select appliances or services.
Scout tip
Private labels are alternatives, not exact matches. Compare tier, ingredients, count, size, quality, and household preference.
Household essentials
Sam's Club
Strong first check for paper towels, toilet paper, detergent, trash bags, batteries, wipes, diapers, snacks, and drinks.
Costco
Strong first check for paper goods, detergent, batteries, food stock-ups, pet products, trash bags, and household consumables.
Scout tip
Use cost per sheet, load, diaper, ounce, pound, battery, or bag instead of the package price.
Fresh, meat, and prepared foods
Sam's Club
Can be especially useful for prepared meals, cafe trips, meat packs, produce, bakery, and family stock-ups tied to the local club.
Costco
Can be especially useful for rotisserie chicken, prepared foods, meat, produce, bakery, and curated fresh departments.
Scout tip
Fresh value depends on usable quantity, quality, storage, freezer space, and how fast the household eats it.
Gas, tires, appliances, and services
Sam's Club
Worth checking for member fuel, tire and battery center savings, optical, pharmacy, appliances, grills, patio, and online shipping terms.
Costco
Worth checking for gas, tire center, optical, pharmacy, appliances, travel, installation-related offers, patio, and Costco Direct savings.
Scout tip
Only count a service benefit if your local club has it and you will use it more than once.
Pickup, delivery, and online orders
Sam's Club
Curbside pickup, club pickup, shipping, delivery from club, Scan & Go, and Plus-specific terms can change the final value.
Costco
Warehouse shopping, Costco.com, Same-Day, Costco Grocery, and delivery options can show different item prices or fees.
Scout tip
Compare the same channel. A club shelf price, online shipped price, and same-day price are not automatically interchangeable.
The Price Scout workflow
- 1Choose the actual Sam's Club and Costco locations or delivery ZIPs before trusting price or availability.
- 2Build one realistic basket instead of comparing isolated loss leaders.
- 3Match brand, size, count, flavor, model, subscription status, and usable quantity before comparing prices.
- 4Normalize compatible products by ounce, pound, sheet, count, diaper, load, battery, or another category-specific unit.
- 5Compare private-label alternatives only after checking whether your household would actually switch between Member's Mark and Kirkland.
- 6Confirm membership terms, coupons, rewards, substitutions, fulfillment fees, taxes, and final checkout total before buying.
Deal checks before checkout
- Sam's Club membership, rewards, pickup, delivery, shipping, local stock, and selected-club or selected-store terms
- Costco membership, rewards, pickup, delivery, shipping, local stock, and selected-club or selected-store terms
- Exact package size, product tier, unit price, household usage, storage space, expiration risk, and waste risk
- Membership tier, local club distance, gas access, private-label preference, tire or appliance services, and online versus in-club price differences
- Amazon third-price benchmark for shelf-stable household, pantry, baby, pet, beauty, and replacement products when seller and package size are credible
- Final checkout total after coupons, subscriptions, fees, tips, taxes, deposits, and membership effects
Check Sam's Club, Costco, and Amazon benchmarks
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Use official warehouse club searches for member pricing and Amazon paid links as a third benchmark for shippable household staples.
Before you make the trip
Compare Sam's Club and Costco before joining or renewing.
Search Price Scout for the exact item, then confirm membership, club stock, pickup, delivery, shipping, and final checkout terms with each retailer.
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Weekly price-check tips before you shop.
Frequently asked questions
Is Sam's Club or Costco cheaper?
Neither warehouse club is always cheaper. Sam's Club can win through Member's Mark, Instant Savings, curbside pickup, or Plus benefits. Costco can win through Kirkland, warehouse savings, services, or Executive rewards. Compare the exact unit price and final checkout channel.
Is Member's Mark as good as Kirkland?
It depends on the category and household preference. Compare ingredients, dimensions, count, taste, quality, warranty, and return terms instead of assuming every private-label item is interchangeable.
Which club is better for pickup?
Sam's Club is often the first check for curbside pickup and Scan & Go workflows. Costco is stronger when you are comfortable with in-warehouse shopping or eligible Costco delivery options. Fees, minimums, and availability vary.
Should I join both Sam's Club and Costco?
Join both only if the combined savings and benefits exceed both annual fees without causing overbuying. Most households should compare their repeat purchases first and choose the club they will use consistently.
Can Price Scout compare Sam's Club and Costco prices?
Yes for supported searches when both retailers have compatible source-backed products in the same reference market. Price Scout withholds unsupported winners when package formats do not match.
Related Price Scout guides
Sources and retailer help pages
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Editorial review record
Reviewed by the Price Scout Editorial Team on . This revision added explicit methodology, source-backed evidence, semantic comparison tables, and machine-readable data. Report corrections through the contact page.