Item 1:

https://backpack.tf/item/4196009197

Sale 1:

Untraceable

https://backpack.tf/profiles/76561198104146629#!/compare/1730851200/1730937600

https://backpack.tf/profiles/76561198029534325#!/compare/1730592000/1730851200

Sale 2:

Bulk

https://backpack.tf/profiles/76561198029534325#!/compare/1733011200/1733529600

https://backpack.tf/profiles/76561198941816254#!/compare/1732406400/1733529600

Sale 3:

Sold alongside 350 Keys for Knifestorm Pithy Professional — Better used there

https://backpack.tf/profiles/76561198941816254#!/compare/1736726400/1736812800

https://backpack.tf/profiles/76561198838788284#!/compare/1736294400/1736726400

Sale 4:

Sold for Haunted Ghosts Exquisite Rack (745 Keys) + Fireproof Secret Diary (312.5 Keys) + Demonflame Grenadier's Softcap (1100 Keys) = 2157.5 → Rounding to 2150 Keys

https://backpack.tf/profiles/76561198838788284#!/compare/1736726400/1736899200

https://backpack.tf/profiles/76561198254882979#!/compare/1736812800/1736899200

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Item 2:

https://backpack.tf/item/2207536828

Sale 4:

Untraceable

https://backpack.tf/profiles/76561198197931763#!/compare/1735689600/1735776000

https://backpack.tf/profiles/76561198040190735#!/compare/1735689600/1735776000

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Item 3:

https://backpack.tf/item/2204738817

Sale 5:

https://marketplace.tf/items/tf2/30140;5;u62

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

$3700/$1.76 = ~2100 (Dec 7)

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Total Sales

2100, 2150

https://imgur.com/o6ETrfi

Taking 2100 - 2150 Keys

Unsolds:

https://backpack.tf/item/2184349054 — 2600

https://backpack.tf/item/2207536828 — 2600

https://backpack.tf/item/3355957424 — 2600

https://backpack.tf/item/2205366697 (spelled) — 2700

https://backpack.tf/item/4196009197 — 3000