Item 1:

https://backpack.tf/item/14932732478

Sale 1:

Sold for 57 Keys (Unusual ID: "14963152617")

https://backpack.tf/profiles/76561198809533802#!/compare/1727568000/1727654400

https://backpack.tf/profiles/76561198066814843#!/compare/1727481600/1727654400

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Item 2:

https://backpack.tf/item/11192490510

Sale 2:

Bulk for Knifestorm Brain Bucket

https://backpack.tf/profiles/76561198035132368#!/compare/1722556800/1722643200

https://backpack.tf/profiles/76561198261483133#!/compare/1722556800/1722643200

Sale 3:

Sold for 60 Keys (Unusual ID: '14782138339")

https://backpack.tf/profiles/76561198261483133#!/compare/1723334400/1723420800

https://backpack.tf/profiles/76561199568031344#!/compare/1723420800/1723593600

Sale 4:

Untraceable

https://backpack.tf/profiles/76561199568031344#!/compare/1724198400/1724803200

https://backpack.tf/profiles/76561198139174433#!/compare/1724198400/1724803200

//

Item 3:

https://backpack.tf/item/7420755194

Sale 5:

Dumped for ~41 Keys (Unusual ID: "14677394287")

https://backpack.tf/profiles/76561198224159528#!/compare/1721001600/1721088000

https://backpack.tf/profiles/76561199118546232#!/compare/1721001600/1721088000

Sale 6:

Sold for 60 Keys (Unusual ID: "14756278564")

https://backpack.tf/profiles/76561199118546232#!/compare/1722816000/1722902400

https://backpack.tf/profiles/76561199102311959#!/compare/1722902400/1722988800

Sale 7:

2 rec traceable

https://backpack.tf/profiles/76561199102311959#!/compare/1724544000/1725062400

https://backpack.tf/profiles/76561199118546232#!/compare/1724889600/1724976000

Sale 8:

Untraceable

https://backpack.tf/profiles/76561199118546232#!/compare/1725408000/1725494400

https://backpack.tf/profiles/76561198850266056#!/compare/1725408000/1725494400

Sale 9:

Untraceable

https://backpack.tf/profiles/76561198850266056#!/compare/1727308800/1728259200

https://backpack.tf/profiles/76561198302774496#!/compare/1728345600/1728432000

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Item 4:

https://backpack.tf/item/14114976814

Sale 10:

Sold for ~52 Keys (Buyer's compare shows the keys)

https://backpack.tf/profiles/76561199581722058#!/compare/1723680000/1723766400

https://backpack.tf/profiles/76561198120325282#!/compare/1723680000/1723766400

Sale 11:

Sold for 52 Keys (Unusual ID: "14854470630")

https://backpack.tf/profiles/76561198120325282#!/compare/1724976000/1725062400

https://backpack.tf/profiles/76561198047609644#!/compare/1724976000/1725062400

//

Total Sales

41, 52, 52 57, 60, 60

https://imgur.com/3buZdi9

With buyers @ ~55, excluding anything below

Taking 57 - 60 Keys

Unsolds:

https://backpack.tf/item/14932732478 - 75

https://backpack.tf/item/11533720527 - $149.99

https://backpack.tf/item/14114976814 - $149.99