I thought cod4 would be still about that price.
A large majority of my games are preowned from gamestation. But have been buying a few new ones with my asda discount recently. (Ac2 i got for £30, 20% off and LFD2 for bro's PC for £20 with 20% off).
New games i bought: Borderlands, Cod MW2, AC2, Halo ODST, fable2, mercenaries 2, Battlefield:BC, Cod WaW, GH World Tour, GH 5, Tom Clancy's HAWX. All a great games and were worth the cash (cept maybe ODST and Mercs).
Oh and LOTR conquest + some crap other one were cheap new, but i traded in shortly after.
Preowned: Mirrors edge, Burnout Paradise, 007 QOS, Halo 3, Oblivion, AC1, Forza 2, Viva Pinata, Cod4, Too Human, Mass effect, Brothers in Arms: HH, Frontlines, splinter cell DA, GRAW 2, Perfect Dark Zero, Enchanted Arms, Fuzion Frenzy, Fifa 08. (And about 5-7 more that i've traded in and cant remember).
Most of my preowned games cost me £5-15, and the vast majority were totally worth it (the ones earlier in the list were the best.) Preowned games are the way forward if you have a large gamestation store you can often get some awesome deals.
/Gand
(Oh and i added alot of LOMCN members to Live when we used to have that leaderboard, but for anyone that plays any of those games and wants a game/co op once in a while add my tag, GoDSnafu.)