Gamestop will take a RROD 360? If so, what do they give you?

Most of the ones I have seen have already been opened and the seal is gone/broken.
I would not think they would take one with a broken seal.
I have fixed a few for family members and got myself one really cheap and was able to fix it.
My main concern
was that someone tried the towel method and fried it beyond fixing, however, now I would be worried that it is a banned console. If it also had the RROD, there would be no way to test it. (Not that I don't trust people on Craigslist, or anything....

)
I see lots of RROD units in pawn shops for $50.00 or less.