Coolshop.co.uk are offering the PC Game of Mass Effect 2 for only £13 at the minute.
If I do a price comparison, I can see that the cheapest elsewhere for this game right now is £15.85+ at Shopto.net.
According to IGN, they give Mass EFfect 2 a rating of 9.2 which is outstanding. Gamespot give it a 9, and CVG give it a 9.3. Very high ratings all round!