Your grocery bill keeps climbing, but a warehouse club might be the one place where the math still works in your favor.
Costco's latest numbers show members are spending more per trip, and it's not because prices are soaring—it's because shoppers are shifting more of their food budget there.
The warehouse giant reported strong quarterly results this week, with comparable sales climbing and membership renewals holding near record highs.
Meanwhile, the government's latest inflation data shows grocery prices up roughly 2% over the past year, with staples like eggs, beef, and coffee swinging far more than that.
Here's where the warehouse model starts to pay off.
Costco buys in enormous volume and caps its markup, often keeping margins far below what traditional supermarkets charge.
That means a 40-pack of paper towels or a bulk bag of coffee can cost noticeably less per unit than the same items at a corner store—if you actually use them before they spoil or expire.
A $65 annual membership only makes sense if you shop there regularly.
Bulk produce can rot before you finish it.
And the legendary $1.50 hot dog hasn't changed price since 1985, but plenty of other items have crept up, from olive oil to frozen shrimp.
Rent and credit card interest are eating into household budgets too, which makes every grocery dollar count more.
With the average credit card rate still hovering above 20%, carrying a balance on a Costco run defeats the purpose.
Pay it off in full or use a rewards card that fits your spending.
Buy shelf-stable staples, paper goods, and household basics in bulk at the warehouse, then grab fresh produce and small quantities at your regular store.
Keep a running price list on your phone for the ten items you buy most, and check unit prices—not just the sticker—before tossing anything in the cart.
Kirkland Signature, Costco's store brand, is another lever.
It's often made by the same manufacturers as name brands and priced 20% to 30% lower.
Members who swap even a few staples to the store label tend to see the biggest savings.
Costco rotates monthly discounts on everything from toothpaste to tires, and stacking those with a bulk buy can beat almost any supermarket sale.
Just don't let a "deal" push you into buying three years' worth of something you'll use twice.
The bottom line: warehouse clubs aren't magic, but in a stretch where rent, insurance, and card rates are all pinching, they're one of the few places where bulk buying still genuinely cuts the per-unit cost.
Shop the list, skip the impulse aisle, and the membership tends to pay for itself.
Our take: Costco works best as a supplement to your normal shopping, not a replacement.
Final Thoughts
If you can resist the impulse buys and stick to staples you'll actually use, the math usually wins—just don't finance the trip on a credit card you can't pay off.