[H] 6.5 CS:GO keys [W] Referral + Pillars of Eternity + NBA 2K17

I have I have
Steamgifts

Left 4 dead 1 for 3 key, Walking dead Season 2 for 4 key Steam gifts or

HB/Steam Keys:
have Ultra Street Fighter IV , Hitman Absolution , Game of Thrones Telltale key, Resident evil 4 Resident evil 6 . Resident Evil Revelations 2 Episode 1

Mortal Kombat X Walking dead Season 2 Sam and Max devils playground

Want CSGO keys

What item would you pay the 0.5 key with?