Would gamestop take back my game?

Actually, wait, I'm wrong. They will refund you.

They'll say "Alright bud, your game was worth $20. We can either give you $6 in cash, or your full $20 in the form of a GAMESTOP GIFT CARD!"

PICK YOUR F(UCKING POISON

But..if it's a used game it says I can return it within 7 days to get my money back.
Or would it still be a shitty gift card?