Just gotta wait.

Sale 1: Sold for 22 keys

http://backpack.tf/profiles/76561198140431189#!/compare/1460505600/1460678400

Sale 2: Sold for Flaming Lantern Hound Dog[21 keys via mini]+The B.M.O.C.[4.5 keys]+Taunt: Zoomin' Broom[2.2 keys]+Strange Bread Bite[1.2 keys]+The Cuban Bristle Crisis[0.6-0.7 keys]

http://backpack.tf/profiles/76561198156471516#!/compare/1461283200/1461369600

21+4.5+2.2+1.2+0.65=29.55 rounding to 30 keys

Sale 3: Sold with Steaming Lucky Shot[14 keys] for Orbiting Fire Killer's Kabuto[25 keys]

http://backpack.tf/profiles/76561198154431488#!/compare/1459555200/1462233600

25-14=11 keys

Mini on Hound Dog: http://backpack.tf/suggestion/5733ea0783de6b208242dc65

I have sales at 11, 22, and 30. 11 is too low, and 30 is too high, calling them both outliers and making this 22 keys flat.