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For me… yes.
I don鈥檛 get everything from CostCo, but I get enough things that are $5+ cheaper other places that I know I make my money back easily.
I purchased my Dyson Stick vacuum for $50 less than other retailers, so I made my membership back with that single purchase.
But it鈥檚 not just about getting things that are cheaper. It鈥檚 also about getting access to the items that you can only get from CostCo. Some are seasonal items, some are part of their standard stock.
I鈥檝e been a member for several years now. I definitely get my money back, and can鈥檛 imagine not having a membership now. I use it too much.