i can confirm that everything *EXCEPT for DLC* can be returned to gamestop for money back, did so myself
they even refunded me an extra $1 because of the tax difference between the store i ordered from and the store i returned it at lol
good luck guys
i buy digital because i could game share, and its convenient
figured if i buy the physical disk and sell it later ill lose about the same amount of money if not more
i gave in and paid 27 on amazon for king dedede, i figured my time is more valuable than driving store to store and sitting on the computer searching it to be in stock... o well
im only collecting the few i like and have them on my desk at home