I've seen a lot of threads on the Gamespot forums aboutpeople getting reamed(can I say reamed?) on trade-ins at EB/Gamestop and the myriad other retailers that buy and sell used games.In the spirit of the conviviality that I find myself perpetually overwhelmed by (/sarcasm), I've decided it was time to give a plug to one of the best things to happen to gaming in a long while: Goozex.
You can visit their website to get all the details, but the bottom line is this: you list the games you want to trade, and when people want them, you mail them out to them and receive "points". These points are used to purchase games that other users are willing to trade. Prices are set according to supply and demand, as well as an average of what the game is retailing for in the marketplace.
Each game you receive will use up one trade credit, which cost $1 apiece. This is how the site is funded.
Visit: http://www.goozex.com to learn more, but -- in the spirit of reciprocity -- tell them that Goozex user "jqtaxpayer" told you about it. Then, after your first trade, they give me 100 points ($5 US) and a free trade.
I encourage everyone who trades in their games or buys used to take a look.