Old and Dusty

https://backpack.tf/item/673961503

Sale 1) Sold + 2 Keys for an Aces High Dragonborn Helm

https://backpack.tf/profiles/76561198400251292#!/compare/1508198400/1508284800 - Buyer's Backpack

Low Outlier.

Dragonborn Mini

https://imgur.com/a/afShv - 2 Week Seller at 11.3 Keys

https://backpack.tf/item/4367255150

Sale 2) Sold + ~8 Keys of Items for a Cloud 9 Brim Full of Bullets (20 Keys)

https://backpack.tf/profiles/76561198087667777#!/compare/1507075200/1507161600

20 - 8 = 12 Keys

Brim Mini

https://backpack.tf/profiles/76561198061489334#!/compare/1505865600/1505952000 - Sold for a Kill-a-Watt Lucky Shot + <0.5 Keys of Items (~21 Keys)

https://backpack.tf/profiles/76561198274006625#!/compare/1506816000/1506902400 - Sold for an Orbiting Fire Napper's Respite (~20 - 21 Keys)

https://backpack.tf/profiles/76561198326246857#!/compare/1506816000/1506902400 - Sold for a Kill-a-Watt Desert Marauder (17 Keys) + 2 Keys

https://backpack.tf/profiles/76561198087667777#!/compare/1506643200/1507075200 - Sold for a Max's Severed Head (~19 Keys, Buyer's Backpack)

https://backpack.tf/profiles/76561198068090261#!/compare/1507075200/1507161600 - Sold for a Sulphurous Ketche + ~2 Keys of Items + 1 Key (~21 Keys)

Desert Marauder Macro

https://imgur.com/a/Ohyan - 3 Day Seller at 16.7 Keys, rounds to 17 Keys

Sale 3) Sold for 9 Keys + 20 Refined

https://backpack.tf/profiles/76561198087667777#!/compare/1507248000/1507420800

Low Outlier.

Sale 4) Sold for a Steaming Scotsman's Stove Pipe + ~6 Keys of Items

https://backpack.tf/profiles/76561198053747026#!/compare/1507766400/1507852800

http://www.tf2outpost.com/trade/29397144 - Capped by the Buyout of 10 Keys + 20 Refined, rounds to 11 Keys

Sale 5) Bulk sale for a Cloudy Moon Glengarry Bonnet

https://backpack.tf/profiles/76561198101325132#!/compare/1512432000/1512518400

https://imgur.com/a/Svtf8 - 4 Day Seller at 12 Keys, 9 Day Seller at 12.35 Keys