Item 1:

https://backpack.tf/item/14867019403

Sale 1:

Sold for 200 Keys (Unusual ID: "15053228910")

https://backpack.tf/profiles/76561198775730397#!/compare/1729555200/1729987200

https://backpack.tf/profiles/76561198392742757#!/compare/1729555200/1729641600

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Item 2:

https://backpack.tf/item/11356332357

Sale 2:

Sold for ~180 Keys (Unusual ID: "15126465573")

https://backpack.tf/profiles/76561198335358415#!/compare/1730937600/1731283200

https://backpack.tf/profiles/76561199581722058#!/compare/1731196800/1731283200

Sale 3:

Sold for 195 Keys (Unusual ID: "15191510202")

https://backpack.tf/profiles/76561199581722058#!/compare/1732924800/1733011200

https://backpack.tf/profiles/76561198392742757#!/compare/1732924800/1733011200

//

Item 3:

https://backpack.tf/item/14967132919

Sale 4:

Bulk

https://backpack.tf/profiles/76561198080334371#!/compare/1729641600/1729728000

https://backpack.tf/profiles/76561198850407517#!/compare/1729641600/1729728000

Sale 5:

Bulk

https://backpack.tf/profiles/76561198850407517#!/compare/1732492800/1732579200

https://backpack.tf/profiles/76561199183171982#!/compare/1732492800/1732579200

Sale 6:

Untraceable

https://backpack.tf/profiles/76561199183171982#!/compare/1732579200/1732665600

https://backpack.tf/profiles/76561198082440463#!/compare/1701907200/1734998400

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Item 4:

https://backpack.tf/item/7957665226

Sale 7:

Sold for ~180 Keys (Unusual ID: "15081220847")

https://backpack.tf/profiles/76561199215748094#!/compare/1729987200/1730246400

https://backpack.tf/profiles/76561198850178158#!/compare/1730073600/1730160000

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Item 5:

https://backpack.tf/item/13534926253

Sale 8:

Gambled

https://backpack.tf/profiles/76561198056089798#!/compare/1728777600/1729555200

https://backpack.tf/profiles/76561199652290612#!/compare/1728864000/1728950400

Sale 9:

Gambled

https://backpack.tf/profiles/76561199652290612#!/compare/1728950400/1729036800

https://backpack.tf/profiles/76561198215104835#!/compare/1728950400/1729036800

Sale 10:

Gambled/Untraceable/Bulk

https://backpack.tf/profiles/76561198215104835#!/compare/1728950400/1729036800

https://backpack.tf/profiles/76561198261483133#!/compare/1728950400/1729036800

//

Marketplace.TF Sale:

https://marketplace.tf/items/tf2/30067;5;u10

Sale 11:

https://marketplace.tf/items/tf2/30067;5;u10

https://marketplace.tf/items/tf2/5021;6

$399.99/$1.78 = ~225 Keys (Dec 24)

//

Total Sales

180, 180, 195, 200, 225

https://imgur.com/yTrQNHe

Given 2 sales + current buy prices (inc. STN), going to include 180 and with sellers @ 204, excluding 225

Taking 180 - 200 Keys

Unsolds:

https://backpack.tf/item/12125015847 — 204

https://backpack.tf/item/7957665226 — 204

https://backpack.tf/item/14867019403 — 204

https://backpack.tf/item/9979936534 — 220

https://backpack.tf/item/8666745720 — $399.99