only bought Vegas 2 and Jedi Academy for $5 each so far. Considering Indigo Prophecy for $4 since I never played it and deciding where I should get Machinarium (Steam is $10 and easiest to manage, Impulse is $7 but I have no clue what that is, direct from the creator website is $10 and includes soundtrack + another game...but the download system for that sounds awful since it's only within the first 14 days)
btw, best deal that I'd buy if I didn't have it for XBLA is Outrun 2 for $2.50