What game have you ever bought which you have considered to be an absolute steal?
A while ago I got Internation Track and Field for PS2 brand new for £4.99 from Game. Considering I couldn't find it anywhere for about 3 years apart from Ebay I thought it was a quality purchase. Not a bad little game either, especially if you have a multi-tap. I got rid of it over a year ago for a cool £20!
I recently purchased God of War off Gameplay for £12.99 and it's just absolutely awesome. Tekken 5 is on the way now for the same price.
Oh yeah and I won't forget about EWR, £0.00 is quite a good deal I reckon.