H) 5 TF2 key W) game gift offer

Are you interested at Killing Floor for 2 keys ?

recettear gift or skulls of the shogun for 3 Keys each?

garrys mod for 1 key :) ?

The Humble Weekly Sale: Paradox Interactive non-BTA Gift URL for 1 tf2 key ?

see here

L4D2, Spec Ops: The Line or Payday the Heist for 4 keys.

dlc quest for 0.5 key :)