Item 1:

https://backpack.tf/item/264352787

Sale 1:

Sold for 66 Keys + Max's Severed Head → 99.5 → Rounds to 100 Keys

https://imgur.com/a/7HSLGjY

https://backpack.tf/profiles/76561198054270952#!/compare/1722729600/1722816000

https://backpack.tf/profiles/76561198045346313#!/compare/1722729600/1722816000

https://backpack.tf/suggestion/66b3c4adc84778b1a5067b18 - Most recently accepted Max's Severed Head suggestion @ 33.5

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Item 2:

https://backpack.tf/item/274269522

Skipping Tradebacks

Sale 2:

Untraceable

https://backpack.tf/profiles/76561198069074737#!/compare/1717459200/1719100800

https://backpack.tf/profiles/76561198848879603#!/compare/1718582400/1718755200

Sale 3:

Sold for 85 Keys (Unusual ID: "14648086249")

https://backpack.tf/profiles/76561198848879603#!/compare/1720137600/1720224000

https://backpack.tf/profiles/76561198027857565#!/compare/1719014400/1720310400

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Item 3:

https://backpack.tf/item/406168749 - duped history

Sale 4:

https://marketplace.tf/items/tf2/52;5;u10

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

$125/$1.64 = ~76 Keys (Jun 23)

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Total Sales

76, 85, 100

https://imgur.com/alZbddk

The marketplace sale can be excluded due to buyers

Taking 85 - 100 Keys

Unsolds:

https://backpack.tf/item/276207360 - 120

https://backpack.tf/item/274269522 - 120

https://backpack.tf/item/277471398 - $199.99