...I bought a "3 red lights" Xbox 360 from some dude for $30. Turns out it was still under warranty, so I sent it in for free, then sold it today at GameStop for $90. Normally they only give $60 or $70, but I highly recommend people check they local Craig's List pages for stuff like this. Make sure the system is less than 3 years old, and has never been opened (make sure warranty seal is still in tact too), it's an easy way to make free money.