The warehouse club's famous $1.50 hot dog hasn't budged in decades, but that's not where the real savings live anymore.
A growing number of members say the biggest wins come from timing, not the food court.
That's because Costco marks down products on a predictable schedule, and shoppers who learn the rhythm can shave serious money off their monthly bill.
The trick isn't extreme couponing or clearing shelves.
When an item's price ends in .97, it's typically a store-specific markdown.
Prices ending in .00 or .88 often signal a manager's special or a discontinued item.
A price ending in .97 with an asterisk in the corner of the tag means the product is on its way out and won't be restocked.
Those pennies matter more than they sound.
A member in Ohio told us she cut her household spending by roughly $80 a month simply by buying .97 items in bulk when she saw them and skipping the same products at full price the following week.
The other lever is the monthly coupon book, which is now digital and refreshes on a set cycle.
Deals typically rotate every few weeks, and the discounts stack with the member-only savings you already get.
If you wait until the last days of a coupon period, some warehouses slash prices further to clear stock.
Sometimes it's a return or a damaged box, so check packaging before you commit.
And bulk buying only saves money if you'll actually use the product before it expires.
Two more habits separate the savers from the rest.
First, shop on weekday mornings, when markdowns are often freshest and shelves are stocked.
Second, ask an employee if an out-of-stock item is coming back — they'll frequently tell you, and sometimes point you to the clearance rack.
Don't sleep on the executive membership math, either.
The 2% annual reward can offset the higher fee if you spend enough, but for lighter shoppers a basic membership plus disciplined .97 hunting usually wins.
Decide based on your real spending, not the pitch at the register.
Shoppers also report that Costco's return policy quietly functions as a price-protection tool of sorts.
If an item you bought drops in price within a short window, a quick chat at the service desk sometimes gets you the difference.
It's not advertised, and it's not guaranteed, but it costs nothing to ask.
The broader takeaway: warehouse clubs reward attention more than loyalty.
The hot dog gets the headlines, but the tag in the corner of the price sign is where the actual money hides.
Our take: Costco isn't cheap by accident — it's cheap by design, and the design rewards shoppers who pay attention.
Learn three price codes and check the coupon cycle, and you'll likely notice the difference within a month.
Final Thoughts
Just don't buy a 48-pack of anything you won't finish.