Dixons, Curry`s and PC World are doing an offer on ALL console software where you buy 2 and get the 3rd free. Just after Christmas I got The Two Towers and Nightfire for the PS2 and Splinter Cell for the X-Box. For £80 it was ok since they were all new releases.
Maybe you could ask a few mates if they want any games and you could split the price. £26.50 for a new game still isn`t cheap, but cheaper than what you usually find.
I hope this helps in some way.