This Secret Can Save You Serious Bucks at Costco

We've all been there. We're riding high on the adrenaline rush of a great Costco deal on tires, vodka, shirts or whatever, feeling like the savviest shopper to ever shop. You log online to see what's popping over on Costco dot com when you spot the exact same thing on sale for *gasp* way less. But don't worry, there's a way to get in on a sale, even if you've already purchased it.