Item 1

https://backpack.tf/item/11930073783

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198353460718#!/compare/1692144000/1692230400

Buyer: https://backpack.tf/profiles/76561198283091524#!/compare/1692230400/1692316800

Item 2

https://backpack.tf/item/11952513355

Sale #2

Untraceable-

Seller: https://backpack.tf/profiles/76561198256218842#!/compare/1690416000/1691625600

Buyer: https://backpack.tf/profiles/76561199072654974#!/compare/1691020800/1691107200

Item 3

https://backpack.tf/item/12128320256

Sale #3

Untraceable-

Seller: https://backpack.tf/profiles/76561199219758482#!/compare/1685232000/1685318400

Buyer: https://backpack.tf/profiles/76561198011324641#!/compare/1684195200/1685318400

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561198011324641#!/compare/1686096000/1686614400

Buyer: https://backpack.tf/profiles/76561199101508611#!/compare/1686441600/1686528000

Sale #5

Bulk transfer-

Seller: https://backpack.tf/profiles/76561199101508611#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561199041022874#!/compare/1686700800/1686787200

Sale #6

Sold with 2 keys for a Morning Glory Shooter's Sola Topi (73.5 keys) (ID "13213996754" of the unusual matches) = 74-2 = 72 keys (using this for the Morning Sola Topi given that it is too high here)-

Seller: https://backpack.tf/profiles/76561199041022874#!/compare/1688428800/1688515200

Buyer: https://backpack.tf/profiles/76561198106176871#!/compare/1687824000/1688601600

Sale #7

Untraceable-

Seller: https://backpack.tf/profiles/76561198106176871#!/compare/1688601600/1691625600

Buyer: https://backpack.tf/profiles/76561198014230017#!/compare/1688428800/1688601600

Sale #8

Sold for 60 keys (ID "13246432717" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561198014230017#!/compare/1688688000/1689984000

Buyer: https://backpack.tf/profiles/76561198144472950#!/compare/1688601600/1689811200

Item 4

https://backpack.tf/item/11940857696

Sale #9

Sold with a Fountain of Delight Taunt: I See You (taking buyers at 1.75 keys) + a Wispy Halos Taunt: Mannrobics (17.5 keys) for 83 keys = 83-17.5-1.75 = 63.75 keys = 64 keys-

Seller: https://backpack.tf/profiles/76561198114255464#!/compare/1690588800/1691539200

Buyer: https://backpack.tf/profiles/76561198099389110#!/compare/1691539200/1691712000

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31271;5;u14

MP.TF Sale #1

Sold for $129.99 on June 14, 2023

Keys @ $1.98

129.99/1.98 = 65.65ish keys

MP.TF Sale #2

Sold for $129.99 on July 14, 2023

Keys @ $1.98

129.99/1.98 = 65.65ish keys

MP.TF Sale #3

Sold for $129.99 on July 24, 2023

Keys @ $1.95

129.99/1.95 = 66.66ish keys

MP.TF Sale #4

Sold for $129.99 on July 28, 2023

Keys @ $1.95

129.99/1.95 = 66.66ish keys

MP.TF Sale #5

Sold for $129.99 on July 31, 2023

Keys @ $1.95

129.99/1.95 = 66.66ish keys

MP.TF Sale #6

Sold for $129.99 on August 12, 2023

Keys @ $2

129.99/2 = 65ish keys

Sales @ 60, 64, 65, 66, 66, 67, 67, 67, 72

Taking 60-67 here