It depends, if it's a game i'm really looking forward to i'll shell out for it the day it comes out, the most recent game I did that on was Halo 2. But mostly when i'm buying games I look for the cheaper games (I'm kicking myself now that I could've had Breath of Fire: Dragon Quarter for £10) like yesterday for example, I saw Devil May Cry 3 and I wanted to buy it but instead I figured I'd go look for a copy of the first game instead. Turns out I couldn't find it and I bought .hack//infection for £20 instead.