Costco has spent years building a reputation as the place where bulk buying quietly beats the grocery store.
But a few recent changes are testing that math, and the shoppers who feel it most are the ones who treat the membership like a religion.
The company has been tightening its entry rules, scanning membership cards at the door in more warehouses and cracking down on people borrowing a relative's card.
That matters because the entire value proposition rests on exclusivity.
If anyone can walk in, the $65 or $130 annual fee looks less like a bargain and more like a toll.
The bigger story is what's happening inside the aisles.
Costco has leaned harder into its own Kirkland Signature brand, which now accounts for roughly a third of sales.
That's great for margins and often great for shoppers, but it also means fewer national brands competing on price.
When a familiar label disappears from the shelf, you can't compare your way to a better deal anymore.
Costco is famous for capping markups and keeping hot dogs cheap, but those loss leaders exist to get you through the door.
The real money comes from the impulse buys: the patio furniture, the giant box of snacks, the TV you didn't plan on.
Warehouse clubs also thrive when inflation makes people feel squeezed.
When grocery prices climb, a $200 Costco run feels like a win even if you spent more than you would have at Aldi.
The membership fee, the gas line, the oversized cart — all of it nudges you toward buying more than you need because the unit price looks so good.
You don't save money by spending $80 on paper towels.
You save money by not buying them until you actually run out.
Costco auto-renews memberships, and the fee quietly hits your card each year.
If you only shop there a few times a year, the math can flip against you fast.
Do the actual calculation: fee divided by number of trips, plus the gas you burn getting there.
For some households, a regular supermarket and a few smart coupons win outright.
It's a well-run business doing exactly what well-run businesses do.
The question is whether the deal is still a deal for you, not whether it's a deal in the abstract.
My take: Costco rewards discipline and punishes impulse.
If you go in with a list, skip the samples, and actually use the membership enough to justify the fee, it can still be one of the better deals in American retail.
Final Thoughts
If you're paying $130 a year to wander aisles and fill a cart you didn't plan on, you're not the customer winning.