Just been to ASDA (The fort, Cheetham Hill, Manchester) who currently have a deal on the PS3 120gb slim;
When bought with 1 chart game, the PS3 itself works out to £217. The cheapest chart game they have is FIFA10 which is £25 so total price is £242. Even if you dont want the game, worst case scenario is CEX will give you £12 for it meaning the PS3 cost £230. Apologies if this is cheaper elsewhere but done a quick search and cant anything... sounds like a deal to me!