[H] Counter-Strike series, Portal and other Valve games [W] good offers

Hi guys,
as I said, I'm searching for traders who want:

Counter-Strike,
Counter-Strike: Condition Zero,
Counter-Strike: Source,
Counter-Strike: Global Offensive,
Day of Defeat,
Day of Defeat: Source,
Portal,
Ricochet,
Team Fortress Classic,
Deathmatch Classic

We can trade also an entire series for one or more games.
Have a nice day :)