my brother just bought rockband from a friend
his friend said "I'll sell it for whatever gamestop will give me as a trade in"
my brother called, and they said they won't take the drums, and for the rest of the stuff (guitar, mic and game) they'd give 50 dollars credit (approx)
I find it VERY funny they won't take the drums, but they DO take the microphone, if anyone has ever bought an actual mic in a real music or recording store, they NEVER take returns on mics (health hazzard with a mic being near.... or with some singers... IN your mouth) I'd never buy a used mic
So, my brother told his friend ... "well I'll give you 80, since 50 is sort of me ripping you off,lol" pretty good deal for rock band