I first signed up for a Costco Gold Star Membership six years ago, back when it was $60 a year. And even though it's only being used by a household of two, and even after a 2024 price hike to $65 annually, it still feels like a worthwhile investment. Between cheaper gas, discounted snacks, and the occasional Costco gadgets worth buying, the warehouse club easily pays for itself.

Doubt it? Just do the math: If you save just $6 a month on things you'd normally buy at the grocery store, you've covered the cost of the annual membership. Save $12 a month, and you've gone and doubled your investment. But, after six years of membership, I've learned that not every item in the store is worth the space in your cart -- much less your pantry. No matter how attractive the price seems, some of Costco's bulk bargains end up being downright wasteful or just plain inconvenient once you get them home. For me, there are three random things I'll never buy there again: tortillas, produce, and bakery treats.