Item 1

https://backpack.tf/item/13065474052

Sale #1

Only some metal matches with ID "13236926253" of the unusual, incomplete and untraceable-

Seller: https://backpack.tf/profiles/76561198013117218#!/compare/1687046400/1694649600

Buyer: https://backpack.tf/profiles/76561199072654974#!/compare/1689033600/1689120000

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561199072654974#!/compare/1690675200/1690761600

Buyer: https://backpack.tf/profiles/76561198006892781#!/compare/1677110400/1691539200

Sale #3

Sold with 20 keys for a Miami Nights Dayjogger (not usable, no other sales for the Dayjogger so this is better used over there)-

Seller: https://backpack.tf/profiles/76561198006892781#!/compare/1694563200/1694649600

Buyer: https://backpack.tf/profiles/76561198087006579#!/compare/1693526400/1694736000

Unusual in Seller's Backpack: https://imgur.com/a/vUy9A1u

Marketplace.tf Sales

https://marketplace.tf/items/tf2/30119;5;u36

MP.TF Sale #1

Sold for $59.99 on September 10, 2023

Average Key Price @ $2.03ish

59.99/2.03 = 29.55ish keys

Unknown History

MP.TF Sale #2

Sold for $59.99 on September 15, 2023

Average Key Price @ $2.05ish

59.99/2.05 = 29.26ish keys

https://backpack.tf/item/13222675667

Sales @ 29, 30

Taking 29-30 here