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First things first, you should never grocery shop when you're hungry. You'll buy the whole store out of snacks and not get what you actually need.
2nd, have you ever noticed that things you buy prepared from the club you're a member at, (Costco, Sam's Club blah blah blah.) It really is different.
So I found a list of food that tastes different when you buy it from a Costco or Sam's and you bring it home to everyone saying "What is this?" That could be a good thing or a bad thing. Like the rotisserie chicken.