I can trade you two Steam accounts, one has CS 1.6, CZ, CZeleted Scenes
The other has Metro 2033, TF2(Will charge for the unclocked stuff).
I will take DayZ Standalone as Steam Gift
And Battlefield 3 Origin Key(Cheapest Available, up to you)
EDIT: Won't sell separately. I bout CZ and CS separately and that cost me 20$, and coupling that with Metro 2033 it's 35$, and coupling that with my TF2 items, it's 40 - 41 $