6.

Missed one, thanks gent.

Sold for an It's a puzzle to me Hellmet(46 Keys)

http://backpack.tf/profiles/76561198088192753#!/compare/1461196800/1461283200

Sold for an Australium Pro KS Sniper Rifle(~38 Keys) and a Blood Pro KS Botkiller Sniper Mk.I(~10 Keys)(48 Keys total)

http://backpack.tf/profiles/76561198072206913#!/compare/1461369600/1461456000

Sold for an Australium Spec KS Sniper Rifle(~35 Keys at the time, Outlier)

http://backpack.tf/profiles/76561198090737788#!/compare/1461283200/1461456000

Sold for a Haunted Ghosts Chieftain's Challenge(33 Keys, Outlier)

http://backpack.tf/profiles/76561198079315133#!/compare/1460937600/1461110400

Sold for an Australium Pro KS Rocket Launcher(~62 Keys)

http://backpack.tf/profiles/76561198090737788#!/compare/1462233600/1463702400

33-35 is too low. While 62 would normally be debateable, the low end on this is debateable as well, but sales don'tlie I guess.

46-62 Keys shoud be fine.

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