I was doing a bit of shopping earlier today, and noticed that there were a fair few games in there at cheaper prices than I expected.
I don't know if these prices are consistent at all stores, but these are some examples that I saw at my local store (Coventry):
Locoroco (PSP) - £12.99
Tekken - Dark Resurrection (PSP) - £12.99
Civilization IV Warlords Expansion Pack (PC) - £5.99
Fantastic 4 - Rise of the Silver Surfer (PS2) - £15.99
Football Manager 2007 (PC) - £9.99
I'm sure there were at least a couple of other PS2 bargains, but this is all I can remember at the moment.