Walk into any Costco on a Saturday and you'll see the same scene: carts piled high with paper towels and rotisserie chicken, while whole sections of the store sit nearly untouched.
They've figured out something that saves them real money every single trip.
The warehouse giant makes most of its profit from membership fees, not merchandise.
That means the deals exist to keep you renewing — and the best ones aren't always the flashy items up front.
Learning where the actual value hides can shave a surprising amount off a monthly grocery bill.
Costco marks down items it's discontinuing with prices ending in .97, and those are often the steepest discounts in the building.
Anything ending in .00 is a manager's special, usually a one-time clearance.
If you see an asterisk in the corner of the tag, that item is on its way out and may not come back.
The rotisserie chicken remains the loss leader that gets people in the door, priced to stay competitive with grocery stores despite inflation.
But the fresh bakery, the food court, and the pharmacy counter often beat outside prices by wider margins than the bulk snacks everyone grabs.
Costco fuel regularly undercuts nearby stations by a meaningful margin, and for members who fill up weekly, that alone can offset a chunk of the annual fee.
The catch is timing — weekday mornings beat the weekend lines by a mile.
Don't sleep on the Kirkland Signature label, either.
Many of those products are made by the same suppliers behind name brands, just with different packaging.
Coffee, olive oil, batteries, and paper goods are consistent standouts for the price.
There's a catch worth knowing about, though.
Bulk buying only saves money if you'll actually use it before it spoils.
A giant tub of spinach that rots in the fridge is a loss, not a deal.
The smartest shoppers buy nonperishables in bulk and fresh food in realistic amounts.
Costco displays cost per ounce or per unit on the tag, and comparing that number against your regular grocery store is the only honest way to know if you're winning.
The generous return policy means a bad bulk purchase usually isn't a permanent mistake, which lowers the risk of trying something new. **The bottom line:** Costco rewards shoppers who treat the membership like a tool instead of a treasure hunt.
Focus on the clearance tags, the gas pump, and the house brand, and skip the impulse buys near the registers.
Final Thoughts
Do that, and the card pays for itself long before the year is up.