Needs a drop.

Sold with ~4 Keys in Sweets for a Circling Peace Sign Bubble Pipe(21 Keys)(17 Keys total)

http://backpack.tf/profiles/76561198132967692/#!/compare/1457856000/1457938800

Sold for an Australium Pro KS Force-a-Nature(~16 Keys) and 3 Keys(19 Keys total)(B/O was 18)

http://backpack.tf/profiles/76561198129763745/#!/compare/1458777600/1458864000

http://www.tf2outpost.com/trade/27985637

Sold for 18 Keys

http://backpack.tf/profiles/76561198096389539/#!/compare/1456387200/1456473600

Sold for 16 Keys

http://backpack.tf/profiles/76561198066065032/#!/compare/1459555200/1459728000

Sold for 16 Keys

http://backpack.tf/profiles/76561198041162643/#!/compare/1458284400/1458543600

Sold for 18 Keys

http://backpack.tf/profiles/76561198006544512/#!/compare/1453795200/1453881600

Sales seem to fit, 16-18 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.