There's a storm coming.

~Team 3~

https://backpack.tf/item/1203212563

Sale 1) Sold for a Time Warp Towering Pillar of Hats

https://backpack.tf/profiles/76561198104872710#!/compare/1490400000/1490486400

http://www.tf2outpost.com/trade/28845015 - Capped by the Buyout of 80 Keys

Sale 2) Sold for a Disco Beat Down Brown Bomber (52.5 Keys)

https://backpack.tf/profiles/76561198219288407#!/compare/1490400000/1490486400

Rounding to 53 Keys

Brown Bomber Mini

https://backpack.tf/suggestion/590644bd0e2cad5511715cdb - 52.5 Keys

Sale 3) Sold for a Purple Energy Powdered Practitioner (90 Keys)

https://backpack.tf/profiles/76561198141079760#!/compare/1492473600/1492560000

https://backpack.tf/item/1195845462

Sale 4) Sold for 80 Keys

https://backpack.tf/profiles/76561198065402907#!/compare/1488844800/1488931200

Sale 5) Sold for 48 Keys

https://backpack.tf/profiles/76561197966563961#!/compare/1491523200/1491696000

Sale 6) Sold for a Ghastly Ghosts Jr Powdered Practitioner + Blizzardy Storm Gym Rat

https://backpack.tf/profiles/76561198074924284#!/compare/1491955200/1492041600 - Buyer's Backpack

Sale 7) Sold for an Insomnia Modest Pile of Scrap (26 Keys) + P. Fetti Tosslecap (26 Keys) + 4 Keys + ~1 Key of Items

https://backpack.tf/profiles/76561197998161567#!/compare/1491609600/1491696000

26 + 26 + 4 + 1 = 57 Keys

Scrap Mini

http://www.tf2outpost.com/trade/28887822 - 1 Week Seller at 26 Keys.

Sale 8) Sold for a Cloudy Moon Western Wear + Frostbite Respectless Robo-Glove + Duped Green Confetti Buckaroos Hat + ~3 Keys of Items

https://backpack.tf/profiles/76561198074924284#!/compare/1492819200/1492905600

Sales at: 80, 53, 90, 80, 48, ~48, 57, ~90

Counting the 2 sales at 90 high, the 2 sales at 48 low, and rounding 53 to 55.