- Costco wins on grocery unit prices, gas quality, Kirkland Signature private label, rewards cap ($1,250/yr vs. $500), and return policy.
- Sam's Club has the lowest entry price — $20/yr through Groupon right now — and the best checkout experience with Scan & Go.
- BJ's is the only warehouse club that accepts manufacturer coupons, and sells in smaller bulk sizes that suit smaller households.
- A warehouse club makes financial sense for households spending $250+/month on groceries and household staples — most recoup the membership fee within 2–3 months.
- All three clubs are currently available at steep discounts for new members on Groupon.
There are three major warehouse clubs in the U.S. — Costco, Sam's Club, and BJ's Wholesale — and each requires a paid annual membership before you can start saving. Choosing the wrong one means paying for a club you won't get full value from.
The short version: Costco offers the best overall quality and the most generous rewards for high spenders. Sam's Club has the lowest barrier to entry and the best app experience. BJ's is the most flexible option for coupon users and East Coast shoppers who prefer smaller bulk sizes. This guide compares all three side by side so you can pick the right one for your household — and save on membership through Groupon's current deals.
Current Membership Deals
Quick Verdict by Category
| Category | Winner | Why |
|---|---|---|
| Lowest grocery prices | Costco | Kirkland Signature undercuts most competitors per unit |
| Cheapest membership | Sam's Club | $50/yr standard (often $20 through Groupon) |
| Best gas savings | Costco | Top Tier fuel, typically $0.20–$0.40/gal below average, plus 5% Visa cashback |
| Best private label | Costco | Kirkland Signature consistently wins blind quality tests |
| Best checkout experience | Sam's Club | Scan & Go lets you skip the line entirely via the app |
| Best return policy | Costco | Near-unlimited returns; membership itself refundable anytime |
| Best for coupon stackers | BJ's | Only warehouse club that accepts manufacturer coupons |
| Most locations | Costco / Sam's | ~600 each nationally; BJ's has ~280, East Coast only |
| Best rewards program | Costco | 2% back up to $1,250/yr (Executive); Sam's and BJ's cap at $500 |
| Best extra services | Costco | Travel, pharmacy, optical, tire, insurance, home services |
Membership Costs: What Each Club Charges in 2026
| Costco | Sam's Club | BJ's | |
|---|---|---|---|
| Basic tier | $65/yr (Gold Star) | $50/yr (Club) | $60/yr (Inner Circle) |
| Premium tier | $130/yr (Executive) | $110/yr (Plus) | $120/yr (Club+) |
| Rewards rate | 2% back, up to $1,250/yr | 2% back, up to $500/yr | 2% back, up to $500/yr |
| Premium breakeven | ~$270/mo spend | ~$230/mo spend | Varies by coupon use |
| Household card | Yes (1 free) | Yes (1 free) | Yes (1 free) |
| Money-back guarantee | Anytime, full refund | Full satisfaction guarantee | First cancellation only |
| Current Groupon deal | $65 + $20–$45 Shop Card | $20/yr (was $50) | $15/yr (was $60) |
At face value Sam's Club is cheapest at $50/year, with BJ's at $60 and Costco at $65. Through Groupon, the picture shifts: Sam's drops to $20, BJ's to $15, and Costco's deal bundles a $20–$45 Shop Card — bringing the effective first-year cost to $20–$45.
The premium tiers are where Costco's math gets interesting. At $130/year it's the most expensive, but the 2% reward caps at $1,250 — versus $500 at both Sam's Club and BJ's. For households spending $270+/month at Costco, the Executive reward alone pays for the upgrade.
How They Compare on What Matters Most
Grocery Prices
Costco typically has the lowest unit prices on staples — toilet paper, cooking oil, butter, eggs, rice — and Kirkland Signature (around 300 products) runs 20–40% below comparable name brands. The trade-off is a limited ~4,000 SKU selection, which means you'll likely need a second store for specialty items.
Sam's Club is more competitive than many shoppers assume. A 150-item price comparison published in early 2026 found Sam's Club cheaper on roughly two-thirds of everyday items, with average unit prices running about 8% lower than Costco's. Member's Mark spans 600+ products at strong prices, and digital Instant Savings stack automatically at checkout.
BJ's shelf prices tend to run slightly higher than both rivals on most items. But BJ's is the only warehouse club that accepts manufacturer coupons — combined with its own digital coupons, individual items can end up cheaper than anywhere else when a strong coupon is available. BJ's also carries ~7,000 SKUs (nearly double Costco's range) and sells in smaller bulk sizes, which cuts waste for smaller households.
Gas Savings
Costco gas is consistently among the cheapest in any market — typically $0.20–$0.40/gal below surrounding stations — and is Top Tier certified, meaning it meets stricter detergent and additive standards than standard fuel. The Costco Anywhere Visa adds 5% cashback on Costco gas up to $7,000/year. One catch: Costco only accepts Visa at the pump.
Sam's Club is usually within a few cents of Costco's gas price and accepts all major credit cards, which means you can pair it with whichever rewards card works best for you. BJ's offers roughly $0.20/gal savings with stackable Fuel Saver discounts for Club+ members.
Gas savings alone can cover the membership fee. At 2 fill-ups per month, 15 gallons each, and $0.25/gal savings, that's $90/year — more than any club's basic membership cost.
Private Label Quality
Kirkland Signature is the gold standard — it regularly outperforms name brands in blind tests, and several products are manufactured by premium brands under the Kirkland label (including its vodka, olive oil, and batteries). About 73% of Costco shoppers say they prefer Kirkland to name brands in many categories.
Sam's Club's Member's Mark has improved significantly with a recent overhaul, now spanning 600+ products with notably better quality than a few years ago. BJ's has two private labels — Berkley Jensen and Wellsley Farms — which are serviceable but not a reason to choose BJ's over the others.
Shopping & Checkout Experience
Sam's Club leads by a significant margin here. Scan & Go lets you scan items as you shop, pay in the app, and walk out — cutting a typical trip by 15–20 minutes. On busy weekends, this is a genuine quality-of-life advantage. Sam's also offers free curbside pickup on $50+ orders and same-day delivery for Plus members.
Costco has self-checkout at most locations and is rolling out pre-scan technology that reduces checkout times, but nothing equivalent to Scan & Go yet. BJ's has a similar ExpressPay feature but with more limited adoption and a 20-item cap.
Return Policy
Costco's return policy is the most generous in retail — most items returnable at any time, for any reason, and the membership itself is refundable anytime with no questions asked. Sam's Club has a comparable satisfaction guarantee with a 90-day window on electronics. BJ's requires items to be returned unused in original packaging and limits the membership guarantee to the first cancellation only.
Locations & Extra Services
Costco and Sam's Club each operate roughly 600 U.S. locations across 44–47 states. BJ's has around 280, concentrated in 20–21 East Coast states — if you're not in that footprint, it's simply not an option. BJ's announced expansion into Texas with 25–30 new clubs planned over 2025–2026, so the geography is beginning to shift.
On services, Costco has the broadest ecosystem by far: travel, pharmacy, optical, hearing, tire center, home services (flooring, HVAC), and discounted auto, home, and life insurance. Sam's Club offers pharmacy, optical, tire, travel, and a dental savings program. BJ's covers optical, tire, and propane — the thinnest lineup of the three.
Which Club Fits Your Situation?
Does a Warehouse Club Pay for Itself?
The USDA's February 2026 Thrifty Food Plan puts the monthly grocery cost for a family of four at $1,003. Most households spending in that range will recoup a basic warehouse membership fee within the first two to three months — and that's before counting gas savings or rewards.
Here's the breakeven math for a household spending $400/month on groceries and gas at their warehouse club, assuming a conservative 15% savings on groceries vs. regular retail and $7.50/month in gas savings:
$2,500
Premium tier breakeven: Costco Executive ($130/yr) pays for itself at ~$270/mo in spend thanks to the 2% reward. Sam's Plus ($110/yr) breaks even at ~$230/mo. If your monthly spend is below those thresholds, stick with the basic tier — you'll get the same warehouse prices without paying for rewards you won't earn back.
More Ways to Save on Groceries Beyond the Club
Frequently Asked Questions
Which warehouse club has the cheapest groceries?
It depends on what you buy. Costco generally has the lowest unit prices on staples, and Kirkland Signature runs 20–40% below name brands. Sam's Club was found cheaper on about two-thirds of everyday items in a 2026 price comparison. BJ's shelf prices tend to be slightly higher, but it's the only club that accepts manufacturer coupons — so individual items can end up cheaper when a good coupon is available.
Is a warehouse club worth it for one person?
Generally not for groceries alone — bulk quantities are hard to get through before they expire in a one-person household. The math can work if you use the gas station regularly, make occasional big purchases (tires, electronics), or take advantage of services like pharmacy and optical. BJ's smaller bulk sizes make it the most single-friendly option. For most solo shoppers, a good cash-back card plus store loyalty programs may save more than a club membership.
Can you use your membership at any location nationwide?
Yes. Costco and Sam's Club memberships work at any of their ~600 U.S. locations. BJ's memberships work at all ~280 locations, but those are concentrated on the East Coast across about 21 states. BJ's is expanding into Texas with 25–30 planned new clubs, but for now it remains primarily an East Coast option.
Does BJ's really accept manufacturer coupons?
Yes — BJ's is the only major warehouse club that accepts manufacturer coupons on top of its own digital coupons. This means you can stack savings in a way that isn't possible at Costco or Sam's Club, which makes BJ's uniquely appealing if you're an active coupon user.
What's the difference between Costco Gold Star and Executive?
Gold Star costs $65/yr and gives you full access to all warehouses, gas stations, and online shopping. Executive costs $130/yr and adds a 2% annual reward on qualifying purchases (capped at $1,250/yr), early 9 a.m. shopping hours, and a monthly $10 Instacart delivery credit. To break even on Executive's extra $65, you need to spend roughly $270/month at Costco. If your spend is below that, Gold Star is the better value.
Can you get a warehouse club membership through Groupon?
Yes. Groupon currently offers discounted first-year memberships for all three major clubs. Costco's deal includes a $20–$45 Shop Card, Sam's Club is $20/yr (60% off), and BJ's is $15/yr (75% off). All three clubs also offer satisfaction guarantees — so you can try the membership risk-free.
How much does the average family save with a warehouse club?
For a family of four spending $400+/month on groceries and household items, realistic annual savings from a warehouse club range from $1,200 to $2,500 — including grocery price differences, gas savings, and rewards. The specific amount depends on which club you join, your shopping patterns, and how consistently you buy at the warehouse vs. a regular grocery store.
Are frozen vegetables as healthy as fresh?
Yes. Frozen vegetables are harvested and frozen at peak ripeness, locking in nutrients. Studies comparing fresh vs. frozen have found frozen often measures higher in certain vitamins, because fresh produce loses nutrients during transport and storage. For cooked dishes, frozen is nutritionally equivalent and significantly cheaper — making it a smart buy whether you shop at a warehouse club or a grocery store.
Want to go deeper on a specific club? See our full guides: Costco Membership Guide · Sam's Club Membership Guide