@Pezen: While it's true that PC games are generally $10 cheaper that trend is becoming less common now that PC devs know they can charge more for their games (look at Blizzard and EA). Furthermore I can't really stress the amazon credit (Best Buy giftcard, etc) that publishers have adopted in the past 2 or so years.
For example lets look at LOTR: War in the North, an upcoming game on all 3 platforms. The PC version is currently $49.99 while the console versions are $56.49 (360) and $59.99 (PS3). however both the 360 and the PS3 versions come with a $20 Amazon credit, essentially knocking down the price to $40.
Shiiiit game. Hence credit.
Portal 2 came with 20 dollars credit. Was that game shit too?