You'll go in with a stack of games and leave with a nickel and a piece of string.
Yeah, this.
Once I went to Gamestop with 4 pretty popular Wii games I couldn't play anymore because of my Wii not being able to read discs. The games were SSBB, Legend of Zelda: TP, Super Paper Mario, and Star Wars the Force Unleashed. They offered me $20.31. :I