Ah, overpriced Sniper hats.

https://backpack.tf/item/2478650549

Sale 1) Sold for a PE Company (100 Keys) + 28 Keys + BS Jefe (19 Keys) + SS Liquidator's (16 Keys) + ~13 Keys of Items + Smoking Strontium (8.5 Keys)

https://backpack.tf/profiles/76561198198869057#!/compare/1526688000/1526774400

100 + 28 + 19 + 16 + 13 + 8.5 = 184.5, which I'll round to 185 Keys

Company Man Mini

https://backpack.tf/suggestion/5b1439eb44325a022a584385 - 100 Keys

Blizzardy Storm El Jefe Mini

https://backpack.tf/suggestion/5b34740fcf6c757be768e930 - 19 Keys

Smoking Strontium Stove Pipe Mini

https://backpack.tf/profiles/76561198040049729#!/compare/1521331200/1529539200 - Sold for 8 Keys? zol's Buy Order is higher. This is probably 9 Keys.

https://backpack.tf/profiles/76561198017780806#!/compare/1526256000/1526342400 - Sold for a '72 Sorcery (6.5 Keys) + 1 Key + ~0.5 Keys of Items

Sale 2) Sold for a Scorching Barnstormer (95 Keys) + Searing Coldsnap (71 Keys) + Haunted Ghosts Copper's (22 Keys) + Logo Conquistador (16 Keys)

https://backpack.tf/profiles/76561198121913969#!/compare/1526688000/1526774400

95 + 71 + 22 + 16 = 204, which I'll round to 200 Keys

Coldsnap Mini

https://backpack.tf/suggestion/5b34780bcf6c7574203f2022 - 71 Keys

Conquistador Mini

https://backpack.tf/suggestion/5b347708cf6c7578ce5f6fc5 - 16 Keys

Sale 3) Sold for a Scorching Flames Pardner's Pompadour (110 Keys) + 86 Keys + Misty Skull Gentleman's Gatsby (42 Keys)

https://backpack.tf/profiles/76561198166102098#!/compare/1527724800/1527897600

High outlier.

Pardner's Mini

https://backpack.tf/suggestion/5b3470b5cf6c756c7e1c849a

Sale 4) Sold for 138 Keys + Harvest Moon Larrikin Robin (74.5 Keys)

https://backpack.tf/profiles/76561198176297517#!/compare/1529107200/1529193600

138 + 74.5 = 212.5, which I'll round to 215 Keys

Robin Mini

https://backpack.tf/suggestion/5b10b54dcf6c7544bd707aa6 - 74.5 Keys