Traveling at the speed of light.

http://backpack.tf/item/4442806780

Sale 1) Sold for a Purple Confetti Stout Shako (18 Keys) + 9 Keys

http://backpack.tf/profiles/76561198042132655#!/compare/1494028800/1494115200

18 + 9 = 27 Keys

Sale 2) Sold for an Aces High Hot Dogger (20 Keys) + Miami Nights Tungsten Toque

http://backpack.tf/profiles/76561198056657724#!/compare/1494115200/1494201600

Fits in the range, supports the high end.

http://backpack.tf/item/4462483045

Sale 3) Sold + 2 Keys for an Orbiting Planets Reggaelator (14 Keys) + Spec KS Aussie Stickybomb Launcher (~12 Keys)

http://backpack.tf/profiles/76561198193843482#!/compare/1496448000/1496534400

14 + 12 = 26 - 2 = 24 Keys

http://backpack.tf/item/4627295076

Sale 4) Sold for a Disco Beat Down Napoleon Complex + Stormy Storm Fed-Fightin' Fedora

http://backpack.tf/profiles/76561198069813252#!/compare/1491955200/1492041600

High Outlier, supports the high end.

Sale 5) Quicksold for 25 Keys

http://backpack.tf/profiles/76561198259338027#!/compare/1492387200/1492473600

http://www.tf2outpost.com/trade/28882200 and http://www.tf2outpost.com/trade/28882203 were created on the same day that the sale happened.

http://backpack.tf/item/5019421962

Sale 6) Sold + Carlton (~1 Key) for an Eerie Orbiting Fire Stainless Steel Pot (31 Keys)

http://backpack.tf/profiles/76561198176521109#!/compare/1492732800/1492819200

31 - 1 = 30 Keys

Pot Mini

http://backpack.tf/suggestion/59431c7d0e2cad0fa42eda3c - 31 Keys

http://backpack.tf/item/5431788871

Sale 7) Sold for 24 Keys

http://backpack.tf/profiles/76561198060115913#!/compare/1492041600/1492128000

Sale 8) Sold for a Professional Killstreak Australium Flame Thrower (~24 Keys) + Steaming Hottie's Hoodie (10 Keys)

http://backpack.tf/profiles/76561198313427445#!/compare/1493769600/1494028800 - Buyer's Backpack

24 + 10 = 34 Keys

Hottie's Mini

http://backpack.tf/profiles/76561198068197715#!/compare/1495670400/1495756800 - Sold for 10 Keys

http://backpack.tf/profiles/76561198002757046#!/compare/1496880000/1496966400 - Quicksold for 10 Keys + 10 Refined

Sale 9) Sold + Spec KS SF Flare Gun (~1.5 Keys) for a Cloud 9 A Rather Festive Tree

http://backpack.tf/profiles/76561198159564401#!/compare/1494028800/1494115200 - Buyer's Backpack

Fits in the range, supports the high end.

Sellers

http://imgur.com/a/mvqIX - Multiple Unsolds at 35 Keys makes Sale 4 high.