I know another thread mentioned the current blockbuster deal. But I had Assassins creed lying around and it's not worth much trade in at the moment.
But Blockbuster would take tn in and you can get the latest title like Fifa Street 3, UT3 for an additional £14.99.
It will work with the xbox 360 version as well, but you can only get a xbox 360 title.
Not the hottest of deals but.......