Re-Resuggesting! Thanks to Icycrevasse for the assistance and to K1ng for letting me know that one sale wasn't usable!

Item 1

https://backpack.tf/item/12813869293

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198926117893#!/compare/1682640000/1682726400

Buyer: https://backpack.tf/profiles/76561198402614129#!/compare/1682553600/1682812800

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198227791420#!/compare/1683072000/1683158400

Buyer: https://backpack.tf/profiles/76561199111073161#!/compare/1683331200/1683417600

Sale #3

Looks like it sold for 14 keys but not very likely, taunt was sold to get the keys necessary to buy the hat and it is unknown how many they were, unusable-

Seller: https://backpack.tf/profiles/76561199111073161#!/compare/1684022400/1684108800

Buyer: https://backpack.tf/profiles/76561198122445210#!/compare/1684108800/1684454400

Item 2

https://backpack.tf/item/11417838147

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561198262282791#!/compare/1686873600/1686960000

Buyer: https://backpack.tf/profiles/76561198412907835#!/compare/1686873600/1686960000

Sale #5

Sold with less than half a key worth of items for a Frozen Icefall Yule Hog (too high to use here)-

Seller: https://backpack.tf/profiles/76561198412907835#!/compare/1686873600/1686960000

Buyer: https://backpack.tf/profiles/76561198985242679#!/compare/1686873600/1686960000

Sale #6

Untraceable-

Seller: https://backpack.tf/profiles/76561198985242679#!/compare/1687392000/1688947200

Buyer: https://backpack.tf/profiles/76561198847681350#!/compare/1687737600/1687824000

Item 3

https://backpack.tf/item/13120309700

Sale #7

Bulk Sale-

Seller: https://backpack.tf/profiles/76561198380713242#!/compare/1685750400/1686096000

Buyer: https://backpack.tf/profiles/76561198079001732#!/compare/1686009600/1686096000

Sale #8

Bulk Sale-

Seller: https://backpack.tf/profiles/76561198079001732#!/compare/1686096000/1686182400

Buyer: https://backpack.tf/profiles/76561199370694017#!/compare/1686182400/1686355200

Sale #9

Bulk Sale-

Seller: https://backpack.tf/profiles/76561199370694017#!/compare/1686355200/1686528000

Buyer: https://backpack.tf/profiles/76561198101261268#!/compare/1686355200/1686441600

Sale #10

Sold for 15 keys-

Seller: https://backpack.tf/profiles/76561198101261268#!/compare/1686787200/1686873600

Buyer: https://backpack.tf/profiles/76561198090750997#!/compare/1686787200/1686873600

Only usable sale @ 15

Taking 15 flat here