How much store credit will i get from gamestop for a PS2 slim and these games?

probably around 70 or 90 dollars to sat a lot. i would recommend you selling it to a friend or sellit in ebay, because gamestop really steals all of your hard earned money, but its your choice. check cheapgamer.com, for the price and recent sale and discounts, if you are going to be a 360 or ps3.