Just a heads up really for folk like me who found Black Ops a bit "Hmmmm". Can trade in at any Argos store, (may need to bring in address identification).
Personally I bought the game for £28 (Sainsburys deal), traded it in today and purchased £50 itunes vouchers for an extra £3, so to me this was a hot deal.
Good game, but not great and a bit dull to me once Single player was completed and multiplayer is the same old thing.
May get voted cold as not buying something directly, but may help some out there.
Other alternatives are trade in at HMV (for £35 store credit), and CEX for £33 cash.
you forgot to mention the trade in price £36.00 @ CEX. also more veriety of stuff to get there :)
and if CEX give £36 the gamestation may beat it by a pound