Item 1:

https://backpack.tf/item/10839811258

Sale 1:

Sold alongside 50 Keys for Burning Flames Slick Cut + Nightmarish Storm Hat Outta Hell

No useable sales on Hat Outta Hell — Better used there

https://backpack.tf/profiles/76561198087911461#!/compare/1732924800/1733097600

https://backpack.tf/profiles/76561198040190735#!/compare/1733011200/1733097600

Sale 2:

Sold for 450 Keys (Unusual ID: "15202680285")

https://backpack.tf/profiles/76561198040190735#!/compare/1733270400/1733356800

https://backpack.tf/profiles/76561198055421322#!/compare/1733270400/1733356800

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Item 2:

https://backpack.tf/item/15336946238

Sale 3:

Sold alongside Crystal Crown Wandering Wraith for Aurora Skies Cranial Cowl — Better used there

https://backpack.tf/profiles/76561198042255909#!/compare/1736467200/1736553600

https://backpack.tf/profiles/76561197961976244#!/compare/1736380800/1736467200

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Item 3:

https://backpack.tf/item/11617718018

Sale 4:

Bulk

https://backpack.tf/profiles/76561198290175952#!/compare/1738108800/1738195200

https://backpack.tf/profiles/76561199775742744#!/compare/1738108800/1738195200

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Item 4:

https://backpack.tf/item/10750912218

Sale 5:

Incomplete compare

https://backpack.tf/profiles/76561198220098345#!/compare/1733011200/1733097600

https://backpack.tf/profiles/76561198040190735#!/compare/1733011200/1733097600

Sale 6:

Sold alongside 125 Keys for Haunted Ghosts Pyromancer's Mask

No useable sale on Pyromancer's mask — Better used there

https://backpack.tf/profiles/76561198040190735#!/compare/1733356800/1733443200

https://backpack.tf/profiles/76561198140559064#!/compare/1732924800/1733443200

Sale 7:

Bulk for Burning Flames Exquisite Rack

https://backpack.tf/profiles/76561198140559064#!/compare/1739404800/1739491200

https://backpack.tf/profiles/76561198316071886#!/compare/1739404800/1739491200

Sale 8:

Sold for Pumpkin Moon Winter Wrap Up (460 Keys) + 150 Keys = 610 Keys

https://imgur.com/pZv9m1f — Capped @ 500 Keys

https://backpack.tf/profiles/76561198316071886#!/compare/1739923200/1740009600

https://backpack.tf/profiles/76561198300186531#!/compare/1739404800/1740009600

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Item 5:

https://backpack.tf/item/10996908956

Skipping gambling

Sale 9:

Sold for 321 Keys + 2x Max's Severed Head (34.5 x 2 → 69 Keys) = 390 Keys

https://backpack.tf/profiles/76561198962174989#!/compare/1737244800/1737417600

https://backpack.tf/profiles/76561198061440669#!/compare/1737417600/1737504000

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Item 6:

https://backpack.tf/item/12130789697 — transfers

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Item 7:

https://backpack.tf/item/14068309613

Sale 10:

Bulk

https://backpack.tf/profiles/76561198091442194#!/compare/1737244800/1737417600

https://backpack.tf/profiles/76561198140316312#!/compare/1737331200/1737417600

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Total Sales

390, 450, 500

https://imgur.com/vJRxDk9

Taking 390 — 500 Keys

Unsolds:

https://backpack.tf/item/10819853044 — 500

https://backpack.tf/item/10996908956 — 500

https://backpack.tf/item/10763525409 — 600

https://backpack.tf/item/14068309613 — $1097

https://backpack.tf/item/11630414382 — $1097

https://backpack.tf/item/12130789697 — $1097