Only 1 in the market.

Sale#1

http://www.tf2outpost.com/trade/20317364

Sold for 28 keys + Professional Killstreak Kritzkrieg (28 + ~15 = 43 = 2.6 buds)

Backpack of seller

http://backpack.tf/profiles/76561198089815020?time=1402556400 Before

http://backpack.tf/profiles/76561198089815020?time=1402642800 After

Backpack of buyer (Doesn't show him having the unusual, but he did have the pro. kritzkrieg + some keys)

http://backpack.tf/profiles/76561198120637329?time=1402642800 Before

http://backpack.tf/profiles/76561198120637329?time=1402729200 After

Total: ~2.6 buds.

Sale #2 (Said he was quickselling, but accepted items)

http://www.tf2outpost.com/trade/20165749

Sold for 1 bud+ 9 keys+ ~9 keys in items (~2.1)

Backpack of Seller

http://backpack.tf/profiles/76561198031371895?time=1402470000 Before

http://backpack.tf/profiles/76561198031371895?time=1402556400 After

Backpack of Buyer

http://backpack.tf/profiles/76561198089815020?time=1402470000 Before

http://backpack.tf/profiles/76561198089815020?time=1402556400 After

Total: ~2.1 buds.

Mini-Suggestion for Professional Killstreak Kritzkrieg

http://www.tf2outpost.com/trade/20335680

Sold for a Blizzardy Storm Sultan's Ceremonial (~15 keys) (No overpay since wasn't offered)

Backpack of seller

http://backpack.tf/profiles/76561198089815020?time=1402729200 Before

http://backpack.tf/profiles/76561198089815020?time=1402815600 After

Backpack of Buyer

http://backpack.tf/profiles/76561198039660421?time=1402729200 Before

http://backpack.tf/profiles/76561198039660421?time=1402815600 After

Mini-suggestion price is 15 keys.

Current Seller

http://www.tf2outpost.com/trade/20804802 No B/O, looking for 5-6. Has no offers.