Doing this.

Sold for a Death at Dusk Killer's Kabuto(102.5 Keys, rounding to 103) and a Haunted Ghosts Attendant(76 Keys)(179 Keys total)

http://backpack.tf/profiles/76561198028943046#!/compare/1456819200/1456905600

Sold for 48 Keys, 3 Max's Heads(~89 Keys combined) and an Australium Pro KS Frontier Justice(~13 Keys)(151 Keys total)

http://backpack.tf/profiles/76561198148511293#!/compare/1459900800/1459987200

Sold with a Max's Severed Head(29.5 Keys) and a Potassium Bonnett(12.5 Keys at the time) for a Green Energy Soldier's Stash(213 Keys)(171 Keys total)

http://backpack.tf/profiles/76561197995194055#!/compare/1460246400/1460332800

Sales seem to fit, rounding the low and high ends.

150-180 Keys should be fine.

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