Costco's latest earnings call revealed something shoppers already suspected: members are flocking to the warehouse giant as grocery prices elsewhere stay stubbornly high.
With renewal rates near record levels and foot traffic climbing, the question for American households isn't whether a membership pays off—it's which aisles deliver the deepest savings.
Store-brand Kirkland Signature continues to be the quiet MVP.
Analysts note the private label now accounts for roughly a third of Costco's sales, and the gap between Kirkland prices and name-brand equivalents has widened.
A 40-count box of Kirkland trash bags, for example, routinely undercuts the leading brand by several dollars without a noticeable quality drop.
Rotisserie chicken remains the loss leader that gets you through the door.
At $4.99, it has held steady even as poultry prices bounced around.
Costco reportedly sells well over 100 million of them annually and takes a loss on each one—a deliberate strategy to drive traffic toward higher-margin items.
Costco fuel typically runs 10 to 30 cents cheaper per gallon than nearby stations, and that gap adds up fast for commuters.
For a driver filling a 15-gallon tank weekly, the savings can approach $150 a year before factoring in the executive membership rebate.
The pharmacy counter deserves more attention than it gets.
Costco's prescription prices often beat major drugstore chains, and members don't need insurance to access the discounted rates.
The same goes for the optical department, where a pair of glasses can cost a fraction of what standalone retailers charge.
Bulk pantry staples—olive oil, coffee, rice, and paper goods—tend to deliver the most reliable per-unit savings.
Buying 36 rolls of paper towels makes sense; buying 10 pounds of fresh produce rarely does for a smaller household.
Don't overlook the food court and the $1.50 hot dog-and-soda combo, a price that has survived decades of inflation.
It's a marketing tool, not a profit center, and it's one of the few places left where a buck and a half still buys lunch.
The bigger picture: as inflation pressures household budgets, warehouse clubs are capturing shoppers who once dismissed the annual fee.
The fee itself rose recently, so the calculus now requires a bit more spending to break even—generally around $60 to $70 a month for the basic membership to pay for itself.
Our take: Costco deals reward discipline, not impulse.
Final Thoughts
The members who save the most walk in with a list, skip the seasonal treasure-hunt aisles, and let the math—not the free samples—decide what lands in the cart.