Harley Quinn

https://backpack.tf/item/5198090551

Sale 1) Sold for a Duped Sunbeams Handyman's Handle (29 Keys) + ~4 Keys of Items

https://backpack.tf/profiles/76561198156315732#!/compare/1496707200/1496793600

29 + 4 = 33 Keys

Handle Mini

https://backpack.tf/profiles/76561198097135729#!/compare/1494115200/1494374400 - Sold + 3 Keys for a Spec KS Aussie Scatter + Batsaber (~33 Keys)

https://backpack.tf/profiles/76561198142526418#!/compare/1490918400/1491004800 - Sold for 28 Keys (Buyer's Backpack)

https://backpack.tf/profiles/76561198142526418#!/compare/1491004800/1491091200 - Sold for 30 Keys

https://backpack.tf/profiles/76561198085269574#!/compare/1492560000/1492646400 - Sold for a Circling Hearts Scout Shako (44.5 Keys)

http://www.tf2outpost.com/trade/28874940 - Capped by the Buyout of 42 Keys

Calling the fourth sale high.

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https://backpack.tf/item/5219460867

Sale 2) Sold + ~1 Key of Items for a Steaming Rotation Sensation (29.5 Keys)

https://backpack.tf/profiles/76561198133540930#!/compare/1496016000/1496102400

29.5 - 1 = 28.5, which I'll round to 30 Keys

Rotation Mini

https://backpack.tf/suggestion/594b1c2fcf6c7529ed620f31 - 29.5 Keys

Sale 3) Sold for a Terror-Watt Backwards Ballcap (33 Keys) + Spec KS Aussie Axtinguisher (~7 Keys) + 1 Key

https://backpack.tf/profiles/76561198226262240#!/compare/1496275200/1496361600 - Buyer's Backpack

33 + 7 + 1 = 41 Keys, which I'll round to 40 Keys

Sale 4) Sold for an Infernal Flames Box Trot (40 Keys)

https://backpack.tf/profiles/76561198226262240#!/compare/1496448000/1496534400