Jumping on the thread to say that I have Portal 1, 2 copies of The ship, and 2 copies of Dota 2 and taking offers.Steam: http://steamcommunity.com/id/FaTony
You could also try http://www.sourceop.com/I've had some good dealings there, just be careful who you barter with
I have a copy of Dota 2. And I would like Call of Juarez: Bound in Blood Is that possible ?
I got unused keys for HL1 anthology and STCC the game