There are many reasons to love Costco, and it's difficult to leave the store without spending $100 on things you didn't have on your list. But there are some things it just doesn't make sense to buy at warehouse stores — and some things that aren't even safe to buy at such places, like the 400,000 solar-powered LED patio umbrellas that were just recalled at Costco after multiple reports of the products catching on fire, with one incident landing a man in the hospital. But what you shouldn't buy at the wholesale giant doesn't end there. Variables such as the size of your household, how quickly you go through things, and what's important to you should all dictate whether you buy something from Costco, or whether it makes more sense financially to buy it in smaller quantities.
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Related: I Shopped at Costco for the First Time and This Is What I Learned