Check out my Trade-thread riiiight here:
http://www.steamgifts.com/trade/B9R2S/payday-the-heist-payday-2-payday-2-goty-edition-sniper-elite-trilogy-nazi-zombie-army-12

Among others, I have the following games:
PAYDAY The Heist
PAYDAY 2
PAYDAY 2 GOTY Edition
Sniper Elite Trilogy
Sniper Elite: Nazi Zombie Army 1
Sniper Elite: Nazi Zombie Army 2