Cheap used CoD Ghosts?

So I recently decided I would like to get the new CoD ghosts but like a dummy I didn't set aside $60 to get it. What do you guys (and gals) think the chance is of someone buying the game, not liking it, then selling it online at less than Gamestop's reused games prices because, let's be honest, the amount of money Gamestop gives back for game is ridiculously small?

And if someone did do that what do you think the asking price would be?

Thanks in advance

~Mr.Borreli

I'm guessing it'll cost probably about $40-$50 at the least after two weeks or so for a game like this.