Since I'm a new 360 owner, there's a large catalog of older games that I haven't played. GameStop has had some nice deals on used games this month with 25% off coupons and $10 trade in bonuses. I picked up Prey and Perfect Dark Zero one day for about $14. After beating Prey, I traded it in along with Saints Row that I got for Christmas, and picked up Lego Star Wars II and Quake 4 for $0.77. That was last Wednesday. I started playing Lego Star Wars immediately and didn't touch Quake 4 until last night. That's when I found out that GameStop gave me the bonus disc for Quake 4. All it contained was some behind-the-scenes videos and a ported version of Quake II, a game I played 10 years ago.
I went back to GameStop after work to take the disc back. They didn't have any other copies of Quake 4 so the guy told me I could swap it for another game of the same price. I didn't really feel like searching for another game, so I asked him to give me store credit. I probably should have just told him to put it down on a GTA IV pre-order.
