Item 1:

https://backpack.tf/item/8818495724

Sale 1:

Sold for 750 Keys (Unusual ID: "16073816910")

https://backpack.tf/profiles/76561198188093413#!/compare/1755561600/1755734400

https://backpack.tf/profiles/76561198328553473#!/compare/1755561600/1755734400

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Item 2:

https://backpack.tf/item/7956915480

Sale 2:

Sold for 750 Keys

https://backpack.tf/item/3913421008 (Key ID: "16093638299")

https://backpack.tf/profiles/76561198014383676#!/compare/1755820800/1756166400

https://backpack.tf/profiles/76561198347885088#!/compare/1755993600/1756080000

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Item 3:

https://backpack.tf/item/10268551804

Sale 3:

Sold for Glimmering Fireworks Undercover Brolly (25 Keys) + Scorching Flames Twisted Topper (90 Keys) + Strange Forever and Forever! Starlight Sorcerer + Burning Flames A Rather Festive Tree (88.5 Keys) + (VFB) Cloud 9 Das Hazmattenhatten + Vicious Circle Berlin Brain Bowl (100 Keys)

No useable sales on Hazmattenhatten or Strange Forever and Forever! Starlight Sorcerer

https://backpack.tf/profiles/76561198081793950#!/compare/1752969600/1753228800

https://backpack.tf/profiles/76561198183617811#!/compare/1752883200/1753228800

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Item 4:

https://backpack.tf/item/1932637131

Sale 4:

Sold for all (except commando elite) unusual on buyer's side which was sold for 710 Keys

https://backpack.tf/profiles/76561198085861958#!/compare/1750982400/1751241600

https://backpack.tf/profiles/76561199501717040#!/compare/1751155200/1751241600

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Item 5:

https://backpack.tf/item/15198038197

Sale 5:

Cash BP sale

https://backpack.tf/profiles/76561198280434589#!/compare/1751846400/1752710400

https://backpack.tf/profiles/76561197966756586#!/compare/1752624000/1752710400

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Item 6:

https://backpack.tf/item/7668605598

Sale 6:

Bulk for Frostbite Hong Kong Cone

https://backpack.tf/profiles/76561198072725528#!/compare/1755216000/1755302400

https://backpack.tf/profiles/76561198860735519#!/compare/1755216000/1755302400

Sale 7:

Untraceable

https://backpack.tf/profiles/76561198860735519#!/compare/1755820800/1755907200

https://backpack.tf/profiles/76561198085861958#!/compare/1755734400/1755907200

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Item 7:

https://backpack.tf/item/13794507186

Sale 8:

Sold for 625 Keys? (buyer's compare)

https://backpack.tf/profiles/76561198987799759#!/compare/1751155200/1751414400

https://backpack.tf/profiles/76561198085861958#!/compare/1750982400/1751241600

Sale 9:

Untraceable

https://backpack.tf/profiles/76561198085861958#!/compare/1755734400/1755907200

https://backpack.tf/profiles/76561198259809286#!/compare/1755820800/1755907200

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Item 8:

https://backpack.tf/item/7025772141

Sale 10:

Bulk for Demonflame Vive La France

https://backpack.tf/profiles/76561198053875960#!/compare/1748822400/1749254400

https://backpack.tf/profiles/76561198139410003#!/compare/1749168000/1749254400

Sale 11:

Bulk for The Dark Doorway Patriot Peak + 150 keys

https://backpack.tf/profiles/76561198139410003#!/compare/1751068800/1752192000

https://backpack.tf/profiles/76561198040190735#!/compare/1752105600/1752192000

Sale 12:

Bulk for Demonflame Sergeant's Drill Hat

https://backpack.tf/profiles/76561198040190735#!/compare/1752537600/1752710400

https://backpack.tf/profiles/76561198393901214#!/compare/1752624000/1752710400

Sale 13:

Sold alongside Burning Flames War Pig for Ghastly Ghosts Jr War Pig

https://backpack.tf/profiles/76561198393901214#!/compare/1752624000/1752710400

https://backpack.tf/profiles/76561198072725528#!/compare/1752364800/1752710400

Sale 14:

Bulk for Frostbite Team Captain

https://backpack.tf/profiles/76561198072725528#!/compare/1754265600/1754352000

https://backpack.tf/profiles/76561198273331466#!/compare/1754179200/1754265600

Sale 15:

Sold for 580 Keys + Burning Flames Beanie the All-Gnawing (96 Keys) = 676 → 680 Keys

https://backpack.tf/profiles/76561198273331466#!/compare/1754784000/1754870400

https://backpack.tf/profiles/76561199853312696#!/compare/1754611200/1754870400

Sale 16:

Untraceable/Cash

https://backpack.tf/profiles/76561199853312696#!/compare/1756080000/1756166400

https://backpack.tf/profiles/76561199881595127#!/compare/1756080000/1756598400

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Item 9:

https://backpack.tf/item/15953592161

Sale 17

Untraceable

https://backpack.tf/profiles/76561198999667088#!/compare/1753488000/1753747200

https://backpack.tf/profiles/76561199523573697#!/compare/1753574400/1753747200

Skipping tradebacks

Sale 18:

Untraceable

https://backpack.tf/profiles/76561199870382085#!/compare/1755907200/1755993600

https://backpack.tf/profiles/76561199160426208#!/compare/1755907200/1755993600

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Total Sales

625, 680, 750, 750

https://imgur.com/NEl38wk

Excluding 625 as an outlier/quicksell

Taking 680 - 750 Keys

Unsolds:

https://backpack.tf/item/15953592161 — 800

https://backpack.tf/item/10193124330 — 800

https://backpack.tf/item/7668605598 — 800

https://backpack.tf/item/11896496577 — 820

https://backpack.tf/item/7527387429 — $1500