This needs a drop.

Classified ads at the time of posting:

http://backpack.tf/classifieds?item=Thirst+Blood&quality=11&tradable=1&craftable=1

3*16 refined

2*18 refined (1 is painted Gold, 1 has Die Job)

1*19 refined (Painted Violet)

5*1 key (2 are painted Gold, 1 is painted After Eight and 1 is painted Black)

Unsolds at 1 key:

http://www.tf2outpost.com/trade/26355199 (~2 days)

http://www.tf2outpost.com/trade/26311279 (~1 week, poorly bumped)

http://www.tf2outpost.com/trade/26344799 (~3 days, never bumped)

http://www.tf2outpost.com/trade/26302106 (~1 week, poorly bumped)

Unsold at 18.33 refined (~1 key):

http://www.tf2outpost.com/trade/26370558 (Young)

Unsold at 18 refined (~0.95 keys):

http://www.tf2outpost.com/trade/26347987 (Has Die Job, ~3 days)

Unsolds at Backpack tf price:

http://www.tf2outpost.com/trade/26290797 (Has Sinister Staining, ~1 week)

http://www.tf2outpost.com/trade/26053727 (~1 month)

http://www.tf2outpost.com/trade/26285734 (~1 week)

Unsold at 17.22 refined:

http://www.tf2outpost.com/trade/26188142 (~3 weeks, poorly bumped)

Unsolds at 16 refined:

http://www.tf2outpost.com/trade/26375234 (Young)

http://www.tf2outpost.com/trade/26119082 (~1 month)

Unsold at 15.66 refined:

http://www.tf2outpost.com/trade/26342332 (Painted Orange, has Putrescent Pigmentation and Voices From Below, ~3 days old)

Sellers at 15 refined:

http://www.tf2outpost.com/trade/26360751 (~1 day old)

http://www.tf2outpost.com/trade/26333083 (Has Voices From Below, ~4 days old, never bumped)

This is all I could find on Outpost that are valid at the time of posting this suggestion.