I borrow/sell/trade them with friends not gamestop. That way the money stays in circulation with me. We usually agree not to all buy the same game if it is not multiplayer.
i havent traded any of my 360 games in i like to keep them all because i like to replay alot of my games and as i dont get alot of money i dont update my collection alot Arden
There are some games, really old ones, which I like to keep and play sometimes. But others, which I do not play very often, I think it is a waste to keep them, so I mostly sell them if I played them. I did not trade any games so far...
I've been thinking about trading in my old Xbox games to get new ones for my 360, but I'm thinking about putting them up on eBay instead. Someone will want them and hopefully will be willing to pay more than Gamestop. Gamestop and I don't really get along. I bought GRAW 1, beat it on the hardest difficulty, and returned it 2 days after I bought it. They wanted to give me $20 store credit for it . I talked to the manager who let me trade it in for a new copy of Oblivion.
I sell em when i've completed them, but to local stores, usually get better money from ones that arent chains.