Getting old games ready to trade out/saving up money

I know I said I was gonna buy only 2 things this month from my Wish list but Final Fantasy: Crisis Core has gotten a release date and it's supposed to be in this month we are in now! So I'm saving money and getting my old games I don't play anymore but not for only that. The game is only $40+tax. I'm also putting in my reserve the Wii game which you probably can guess. Uh-duh Mario Kart Wii! lol Hopefully my situation will be me paying out for my Final Fantasy: Crisis Core and using my used games to pay out Mario Kart. If anything I will pay for the reserve and pay a little bit of the Mario Kart and pay the rest of it later.

I have a total of 8-9 games I'm gonna trade in so this is gonna be fun to see the outcome or downright awful Gamestop experience. (I really don't need another one lol)