Item 1

https://backpack.tf/item/11819405833

Sale #1

Bulk transfer-

Seller: https://backpack.tf/profiles/76561199107865875#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561197963500354#!/compare/1686700800/1686787200

Item 2

https://backpack.tf/item/6522130785

Sale #2

Traded between quicksell bots-

https://backpack.tf/item/6522130785

Sale #3

Bulk sale-

Seller: https://backpack.tf/profiles/76561198850121720#!/compare/1683763200/1683849600

Buyer: https://backpack.tf/profiles/76561198449321699#!/compare/1683763200/1683849600

Sale #4

Transfer between accounts?-

Seller: https://backpack.tf/profiles/76561198449321699#!/compare/1685145600/1685491200

Buyer: https://backpack.tf/profiles/76561198335905692#!/compare/1672790400/1685491200

Sale #5

Sold for an Orbiting Planets Swagman's Swatter? (not usable, no other usable sales for the Swatter)-

Seller: https://backpack.tf/profiles/76561198335905692#!/compare/1686182400/1687305600

Buyer: https://backpack.tf/profiles/76561199059698603#!/compare/1686441600/1686528000

Sale #6

Bulk sale-

Seller: https://backpack.tf/profiles/76561199059698603#!/compare/1686787200/1686873600

Buyer: https://backpack.tf/profiles/76561199237594600#!/compare/1674518400/1687305600

Sale #7

Seems to have sold for a few unusual taunts? Would be too high if true but it is a bot dump regardless so unusable-

Seller: https://backpack.tf/profiles/76561199237594600#!/compare/1687305600/1690934400

Buyer: https://backpack.tf/profiles/76561199026390261#!/compare/1687651200/1687737600

Sale #8

Sold for 11 keys?-

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1687824000/1687910400

Buyer: https://backpack.tf/profiles/76561199057187154#!/compare/1687824000/1687910400

Sale #9

Untraceable-

Seller: https://backpack.tf/profiles/76561199057187154#!/compare/1688947200/1689033600

Buyer: https://backpack.tf/profiles/76561198798223613#!/compare/1688947200/1689033600

Item 3

https://backpack.tf/item/1924982353

Sale #10

Untraceable-

Seller: https://backpack.tf/profiles/76561198021572167#!/compare/1686009600/1689897600

Buyer: https://backpack.tf/profiles/76561198375673085#!/compare/1687824000/1690588800

Sale #11

Untraceable-

Seller: https://backpack.tf/profiles/76561198375673085#!/compare/1687824000/1690588800

Buyer: https://backpack.tf/profiles/76561198273388796#!/compare/1690675200/1690848000

Item 4

https://backpack.tf/item/905725591

Sale #12

Bulk sale-

Seller: https://backpack.tf/profiles/76561198036519805#!/compare/1686960000/1688083200

Buyer: https://backpack.tf/profiles/76561198044164790#!/compare/1688083200/1688169600

Sale #13

Sold for 11 keys + 65.11 refined (ID "13202900036" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561198044164790#!/compare/1688169600/1688256000

Buyer: https://backpack.tf/profiles/76561199026390261#!/compare/1688169600/1688256000

Sale #14

Sold for 12 keys + 7.33 refined (ID "13271721858" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1689724800/1689811200

Buyer: https://backpack.tf/profiles/76561198830682097#!/compare/1689033600/1689897600

Item 5

https://backpack.tf/item/661965049

Sale #15

Sold for 12 keys (ID "13152739293" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561197996095002#!/compare/1686787200/1686873600

Buyer: https://backpack.tf/profiles/76561198154305770#!/compare/1686787200/1687046400

Marketplace.tf Sales

https://marketplace.tf/items/tf2/167;5;u3088

MP.TF Sale #1

Sold for $34.99 on July 11, 2023

Keys @ $1.95

34.99/1.95 = 17.94ish keys

MP.TF Sale #2

Sold for $36 on July 28, 2023

Keys @ $1.95

36/1.95 = 18.46ish keys

Sales @ 11, 12, 12, 12, 18, 18

Taking 12-18 here