You should check out steams store if you haven't already, they have a sale for the rest of the year, with the games on sale changing every day. I just scored S.T.A.L.K.E.R for $2 and I expect similar great deals in the coming days.
Just a heads up. Post your loot in this thread if you get anything.
edit: lololol I just noticed there's already a steam discount thread. Some mod delete this plz k thanks