Yes you can. . as far as trading in and purchasing and returning to the store with your purchase to return/swap/get store credit
Long as you still have the receipt you can get your money-back within a week. Typically they don't becuse someone could buy a game and beating then return it essentially doing a free rental.. If not you can sell the game back for cash or instore credit. You typically get more if you choose instore credit.
You should be able to. I believe they do have a return policy for about a week after you purchase something.
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