Probably easier online to see what they have in stock before you go to the store. That's what I do to compare with other stores.
Yes Costco has air mattresses sometimes you'll have to get help to find it in the store and to get the right one that you're looking for being that they have several different types of air mattresses and if you're not satisfied with their you can go to a good sporting good store Mike Bass Pro Shops or something like that Ikea Etc
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