Oxymoron, unless... Jarate is gasoline? Credits to Cashew for the sales themselves.

http://backpack.tf/item/3589366937

Sale 1) Sold for a Time Warp Soldered (74.5 Keys) + Max's (~19 Keys) + Duped Circling TF Logo Ol' Snaggletooth (No mini; taking current price)

http://backpack.tf/profiles/76561198132804631#!/compare/1488585600/1489536000

74.5 + 19 + 15 = 108.5, which rounds to 109 Keys.

Sensei Mini

Sold + Logo Snaggle (15 Keys) for a Cloud 9 Ritzy (55 Keys) + P. Fetti Trophy (25 Keys) + Swirl Most Wanted (19 Keys)

http://backpack.tf/profiles/76561198050062763#!/compare/1488499200/1488585600

http://imgur.com/a/Nth3q - Seller at 65 Keys. Taking a range.

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http://backpack.tf/item/5047217721

Sale 2) Sold + 20 Keys + ~1 Key of Refined for a Scorching Flames Noble Amassment of Hat (95 Keys)

http://backpack.tf/profiles/76561198047049019#!/compare/1488067200/1488153600

95 - 21 = 74 Keys.

Noble Mini

http://backpack.tf/profiles/76561198047049019#!/compare/1488240000/1488326400 - Sold for a Molten Mallard Federal Casemaker

http://backpack.tf/suggestion/58b5f455e338773ad8492320 - Casemaker has a suggestion up at 95 Keys

http://backpack.tf/profiles/76561198087402437#!/compare/1487980800/1488067200 - Sold for the 4 Flies Unusuals + ~4 Keys of Items

http://www.tf2outpost.com/trade/28728932 - Capped by the Buyout of 95 Keys

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http://backpack.tf/item/3827093549

Sale 3) Sold for an Orb. Fire DCO (39 Keys) + Pro KS Aussie Wrench (~26 Keys) + Cloud 9 Pith (19 Keys) + Kazotsky Kick (~2 Keys)

http://backpack.tf/profiles/76561198129299181#!/compare/1484870400/1484956800

39 + 26 + 19 + 2 = 86 Keys

DCO Mini

http://backpack.tf/suggestion/58ca0e3cc4404553da2c3689 - 39 Keys

Sale 4) Sold for a Duped Haunted Ghosts Company Man (90 Keys)

http://backpack.tf/profiles/76561198129299181#!/compare/1487116800/1487289600

Company Man Mini

http://backpack.tf/profiles/76561198129299181#!/compare/1489449600/1489536000 - Sold + ~8 Keys of Items for a Vivid Plasma Cold Killer (110 Keys)

http://imgur.com/a/f96oE - Clean Seller at 90 Keys. Capping at this.

Cold Killer Micro

http://backpack.tf/suggestion/58c4e997e33877207b3db030 - 110 Keys

http://www.tf2outpost.com/trade/28805653 - 2 Week Unsold at 100 Keys rules Sale 1 high. Sale 2 is far from the other sales, so I'm counting it as a low sale.