Item 1:

https://backpack.tf/item/13721233795

Sale 1:

Sold for 35 Keys (Keys came from sale of Revenant's Rack Tundra Top)

https://backpack.tf/profiles/76561198103015460#!/compare/1699660800/1699920000

https://backpack.tf/profiles/76561198373858816#!/compare/1699660800/1699747200

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Item 2:

https://backpack.tf/item/13695828835

Sale 2:

Sold for 35 Keys

https://backpack.tf/profiles/76561199139034449#!/compare/1699833600/1699920000

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Item 3:

https://backpack.tf/item/13684096564

Sale 3:

Sold + 3 Frozen Aurora war paints (2x FT + 1x MW) + Arachne's Web Ludicrously Lunatic Lunon Fedora + Dead Man's Party Taunt: The Carlton + Floppin' Frenzy Taunt: Buy A Life for a Specialized Killstreak Australium Rocket Launcher

https://backpack.tf/profiles/76561199004208220#!/compare/1698624000/1698710400

https://backpack.tf/profiles/76561198066582436#!/compare/1697846400/1698710400

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Item 4:

https://backpack.tf/item/13667009013

Sale 4:

Gambled?

https://backpack.tf/profiles/76561199108948356#!/compare/1703894400/1704585600

https://backpack.tf/profiles/76561199245733895#!/compare/1704499200/1704585600

Sale 5:

Gambled/untraceable

https://backpack.tf/profiles/76561199245733895#!/compare/1704672000/1704758400

https://backpack.tf/profiles/76561199080904149#!/compare/1704585600/1704672000

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Item 5:

https://backpack.tf/item/13657644696

Sale 6:

Untraceable

https://backpack.tf/profiles/76561198165454737#!/compare/1698624000/1698796800

https://backpack.tf/profiles/76561198085513454#!/compare/1698451200/1698883200

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Item 6:

https://backpack.tf/item/13651145235

Sale 7:

Sold for 43 Keys - https://backpack.tf/item/13640556764 (ID: 13708573264)

https://backpack.tf/profiles/76561198081864298#!/compare/1698019200/1698105600

https://backpack.tf/profiles/76561198397414648#!/compare/1698019200/1698105600

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Item 7:

https://backpack.tf/item/13643450349

Sale 8:

Sold for 45 Keys

https://backpack.tf/profiles/76561198149081920#!/compare/1697673600/1697760000

https://backpack.tf/profiles/76561198447765543#!/compare/1697587200/1697673600

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Item 8:

https://backpack.tf/item/13641619254

Sale 9:

Sold for 32 Keys

https://backpack.tf/profiles/76561197964546925#!/compare/1698624000/1698710400

https://backpack.tf/profiles/76561199389372563#!/compare/1698537600/1698624000

Sale 10:

Sold for 36 Keys

https://backpack.tf/profiles/76561198117597416#!/compare/1702944000/1703030400

https://backpack.tf/profiles/76561198871674171#!/compare/1702771200/1703030400

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Marketplace.tf:

https://marketplace.tf/items/tf2/31383;5;u300

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

Sale 11

$99.99/1.74 = ~57 Keys

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Total Sales

32, 35, 35, 36, 43, 45, 57

https://imgur.com/tmlq0je

Excluding 32 Keys as it's close to Buy orders(including 35, 36 since there are multiple sales); excluding 57 as a high outlier

Taking 35 - 45 Keys