Oy.

Credits to Mindacos for the Sales and Burning Company Man Mini

Sold + 40 Keys for a Cloudy Moon Crone's Dome(900 Keys) (Credits to FaZe $w4gg3R_K1Dd for the sale!)

http://backpack.tf/profiles/76561198124846866/#!/compare/1454140800/1454227200

https://gyazo.com/abaecb08e8c5a036690099ff7b6b0e55

900 - 40 = 860 Keys

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Sold + DP Muffs (21.5 Keys) for a Duped Burning Company Man (223 Keys) + Morning Glory HKC (260) + Nuts Soldier's Stash (32 Keys)

http://backpack.tf/profiles/76561198155237823/#!/compare/1456732800/1456905600

223 + 260 + 32 = 515 - 21.5 = 493.5 Keys Outlier

Company Man Mini

Sold for a Death at Dusk Hong Kong Cone (245 Keys) and 1 Key (246 Keys total)

http://backpack.tf/profiles/76561197963441573/#!/compare/1454832000/1454918400

Sold for 194 Keys and ~6 Keys in Sweets(200 Keys total)

http://backpack.tf/profiles/76561198037271185/#!/compare/1456300800/1456387200

Taking 223

Hong Kong Cone Mini

http://backpack.tf/vote/id/56f5510183de6b07b645bd56 - 260 Keys

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Sold + ~10 Keys of Sweets for a GE HazMat Headcase (540) + Duped Flaming Lantern Bonk Boy (116) + Holy Grail Deep Fried Desire (40 Keys)

http://backpack.tf/profiles/76561198132024421/#!/compare/1453708800/1453795200

540 + 116 + 40 = 696 - 10 = 686 Keys

Hazmat Mini

http://backpack.tf/vote/id/56ecc504b98d88d91175a057 - 540 Keys

Bonk Boy Mini

http://backpack.tf/profiles/76561198085269574/#!/compare/1454659200/1454745600 - Sold + Spec KS Aussie Blut (~12) for a Scorching Titanium (~128)

Using 116 Keys

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Sold for:

-Burning Flames Soldier's Stash

-Burning Flames Trophy Belt

-Anti-Freeze Furious Fukaamigasa

-Something Burning This Way Comes Das Naggenvatcher

-Duped Vivid Plasma Mining Light

-Green Black Hole Shooter's Sola Topi

-Circling TF Logo Brigade Helmet(26 Keys)

-Australium Pro KS Force-a-Nature(~15 Keys)

-3 Keys

http://backpack.tf/profiles/76561198155237823/#!/compare/1456041600/1456214400

http://backpack.tf/profiles/76561198061376237/#!/compare/1456128000/1456214400

http://www.tf2outpost.com/trade/27882717 - I'd say this is easily capped by the Buyout of 850 Keys

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DUPED SALE(Credits to Randy!)

Sold with an Aces High Stainless Pot(14 Keys) and ~4 Keys in Sweets(18 Keys total) for:

-Sunbeams Neckwear Headwear(355 Keys)

-Sunbeams Waxy Wayfinder(85 Keys)

-Misty Skull Le Party Phantom(No sales, using 96.5)-Scorching Flames Prince Tavish's Crown(103 Keys)

-Australium Pro KS Eyelander(~50 Keys)

~671.5 Keys total, rounding to 670

http://backpack.tf/profiles/76561198064718323/#!/compare/1452844800/1454659200

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Rounding 686 to 700 and 860 to 850, and using 700 - 850