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Hello! There's no denying that Costco is a popular shopping destination. For many people, this is the place to buy everything from groceries to electronics. But if you read the costco reviews you will realize that there are some downsides to shopping at this club that you should be aware of. One of the downsides is that they have a limited selection on some items, and you also need to remember that you have to pay an annual fee to join this club.