Just come back from Asda Feltham where they were selling off games where the boxes had been lost or stolen. They also had some co.mplete games just reduced to clear.
All the games are brand new.
I picked up Guitar Hero 5 for 360 - £3
Iron Man ps3 - 3
Monster Hunter Unite (boxed) - £5
Band Hero PS2 - £1
Uncharted (1st one) - £5
Harry Potter and the order of the Phenix PS3 - £2
To be honest there were loads. It might be store specific but might be worth checking your local store to see what they have.