How much store credit would I receive by selling Black Ops and Crysis 2 for xbox 360 at gamestop?

Probably 50 for bothHow much store credit would I receive by selling Black Ops and Crysis 2 for xbox 360 at gamestop?
Don't sell them to Gamestop. They give you less that 50% of original price for new games. Sell them to a person, and you can get 45-50 dollars out of them easy.How much store credit would I receive by selling Black Ops and Crysis 2 for xbox 360 at gamestop?
it's 2 good games and if they are in good condition with no/minor scratches,30-40$ for each game.