Item 1:

https://backpack.tf/item/12074369124

Sale 1:

Sold for 201 Keys + Hypno-Eyes (19 Keys) = 220 Keys

https://backpack.tf/profiles/76561198012827978#!/compare/1735516800/1735603200

https://backpack.tf/profiles/76561198067077562#!/compare/1734998400/1735603200

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https://backpack.tf/item/9581704849

https://backpack.tf/profiles/76561198012827978#!/compare/1735516800/1735603200 — immediately sold for ~19 Keys

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Sale 2:

Sold for 245 Keys (Unusual ID: "15420130761")

https://backpack.tf/profiles/76561198067077562#!/compare/1738540800/1738627200

https://backpack.tf/profiles/76561198258841846#!/compare/1738540800/1738627200

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Item 2:

https://backpack.tf/item/12668479721

Sale 3:

Bulk

https://backpack.tf/profiles/76561198260163913#!/compare/1732233600/1732320000

https://backpack.tf/profiles/76561198054270952#!/compare/1732233600/1732320000

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Item 3:

https://backpack.tf/item/8169483505

Sale 4:

Bulk

https://backpack.tf/profiles/76561198179482691#!/compare/1729382400/1732147200

https://backpack.tf/profiles/76561198057412106#!/compare/1732060800/1732147200

Sale 5:

Untraceable

https://backpack.tf/profiles/76561198057412106#!/compare/1734739200/1734912000

https://backpack.tf/profiles/76561199026390261#!/compare/1734825600/1734912000

Sale 6:

Sold for ~251 Keys? (Buyer's compare)

https://backpack.tf/profiles/76561199026390261#!/compare/1736467200/1736553600

https://backpack.tf/profiles/76561199510026647#!/compare/1736553600/1736726400

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Item 4:

https://backpack.tf/item/14924365285

Sale 7:

Bulk

https://backpack.tf/profiles/76561198042275505#!/compare/1731196800/1731628800

https://backpack.tf/profiles/76561198290175952#!/compare/1731542400/1731628800

Sale 8:

Bulk for Haunted Ghosts Exquisite Rack

https://backpack.tf/profiles/76561198290175952#!/compare/1731715200/1731801600

https://backpack.tf/profiles/76561198220098345#!/compare/1731715200/1731801600

Sale 9:

MPTF

https://backpack.tf/profiles/76561198220098345#!/compare/1731801600/1731888000

https://backpack.tf/profiles/76561198073495671#!/compare/1733097600/1733184000

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https://marketplace.tf/items/tf2/30067;5;u14

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

$566.67/$1.77 = 320 Keys (Dec 2)

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Item 5:

https://backpack.tf/item/14821336789

Sale 10:

https://backpack.tf/profiles/76561198986850781#!/compare/1734652800/1734739200 - Untraceable

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Item 6:

https://backpack.tf/item/14311682176 — Tradeback

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Item 7:

https://backpack.tf/item/8155619260

Sale 11:

https://backpack.tf/profiles/76561198064873161#!/compare/1738108800/1738627200 - Untraceable

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Total Sales

220, 245, 251, 320

https://imgur.com/E00mqpZ

Excluding 320 due to lower sellers and sales

Taking 220 - 251 Keys

Unsolds:

https://backpack.tf/item/8155619260 — $550

https://backpack.tf/item/14821336789 — $550

https://backpack.tf/item/12668479721 — 310

https://backpack.tf/item/12074369124 — 310

https://backpack.tf/item/5006863478 — 310

https://backpack.tf/item/14234189110 — 311

https://backpack.tf/item/8169483505 — 320

https://backpack.tf/item/14924365285 — 320