Item 1

https://backpack.tf/item/12904765878

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198157595421#!/compare/1683936000/1687046400

Buyer: https://backpack.tf/profiles/76561199019420779#!/compare/1683072000/1685318400

Sale #2

Bulk transfer?-

Seller: https://backpack.tf/profiles/76561199019420779#!/compare/1685318400/1688860800

Buyer: https://backpack.tf/profiles/76561198188093413#!/compare/1687824000/1687910400

Item 2

https://backpack.tf/item/12721862166

Sale #3

Sold for 15 keys (keys in buyers match)-

Seller: https://backpack.tf/profiles/76561199192607141#!/compare/1684022400/1684108800

Buyer: https://backpack.tf/profiles/76561198446177506#!/compare/1683763200/1684540800

Item 3

https://backpack.tf/item/12703062716

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561199192607141#!/compare/1684800000/1684886400

Buyer: https://backpack.tf/profiles/76561198338602750#!/compare/1685232000/1685750400

Item 4

https://backpack.tf/item/12699381457

Probably all gambled, not using this

Item 5

https://backpack.tf/item/12630512898

Sale #5

Bulk transfer?-

Seller: https://backpack.tf/profiles/76561198038666068#!/compare/1686355200/1686700800

Buyer: https://backpack.tf/profiles/76561199111073161#!/compare/1686528000/1686614400

Sale #6

Sold for 14 keys (ID "13150511214" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561199111073161#!/compare/1686700800/1686787200

Buyer: https://backpack.tf/profiles/76561198884006803#!/compare/1686787200/1687392000

Item 6

https://backpack.tf/item/12553685137

Sale #7

Untraceable-

Seller: https://backpack.tf/profiles/76561199433230689#!/compare/1684281600/1684368000

Buyer: https://backpack.tf/profiles/76561198120672630#!/compare/1684281600/1684886400

Sale #8

Sold for a Strange Professional Killstreak Scattergun + 14 keys? (seems to high so unusable)-

Seller: https://backpack.tf/profiles/76561198120672630#!/compare/1685318400/1685404800

Buyer: https://backpack.tf/profiles/76561198151502845#!/compare/1685318400/1685664000

Sale #9

Sold for a Midnight Whirlwind Skating Scorcher (2.71 keys) + Panzer Pants Taunt (3.2 keys) + a Starboard Crusader (1.11 keys) + 1 key + 121 refined = 3.2+2.16+1.11+1+2.13 = 9.6ish keys

Seller: https://backpack.tf/profiles/76561198151502845#!/compare/1685664000/1686009600

Buyer: https://backpack.tf/profiles/76561198085849469#!/compare/1685491200/1685836800

Item 7

https://backpack.tf/item/12431311297

Sale #10

Untraceable-

Seller: https://backpack.tf/profiles/76561198345235600#!/compare/1686009600/1687132800

Buyer: https://backpack.tf/profiles/76561198285369378#!/compare/1683072000/1686873600

Sale #11

Sold for 9 keys-

Seller: https://backpack.tf/profiles/76561198285369378#!/compare/1688860800/1688947200

Buyer: https://backpack.tf/profiles/76561198120332855#!/compare/1688774400/1689033600

Sale #12

Untraceable-

Seller: https://backpack.tf/profiles/76561198120332855#!/compare/1689120000/1689897600

Buyer: https://backpack.tf/profiles/76561198405209387#!/compare/1690416000/1690588800

Item 8

https://backpack.tf/item/12416446403

Sale #13

Untraceable-

Seller: https://backpack.tf/profiles/76561199026390261#!/compare/1685404800/1685491200

Buyer: https://backpack.tf/profiles/76561198174890191#!/compare/1685491200/1685750400

Item 9

https://backpack.tf/item/12415133730

Sale #14

Untraceable-

Seller: https://backpack.tf/profiles/76561199085116273#!/compare/1688774400/1688860800

Buyer: https://backpack.tf/profiles/76561198357295855#!/compare/1687737600/1689897600

Item 10

https://backpack.tf/item/13145910095

Sale #15

Bulk sale-

Seller: https://backpack.tf/profiles/76561198118580639#!/compare/1687392000/1687478400

Buyer: https://backpack.tf/profiles/76561198044164790#!/compare/1687392000/1687478400

Sale #16

Sold for 11 keys (ID "13177683674" of the unusual and keys in buyer's side match)-

Seller: https://backpack.tf/profiles/76561198044164790#!/compare/1687478400/1687651200

Buyer: https://backpack.tf/profiles/76561198405505391#!/compare/1687478400/1687564800

Sale #17

Untraceable-

Seller: https://backpack.tf/profiles/76561198405505391#!/compare/1687564800/1687651200

Buyer: https://backpack.tf/profiles/76561198818717412#!/compare/1649894400/1687651200

Sale #18

Sold for 24 keys?-

Seller: https://backpack.tf/profiles/76561198818717412#!/compare/1687651200/1687824000

Buyer: https://backpack.tf/profiles/76561198043444428#!/compare/1687737600/1687824000

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31333;5;u278

MP.TF Sale #1

Sold for $39.95 on May 10, 2023

Keys @ $2.02

39.95/2.02 = 19.78ish keys

MP.TF Sale #2

Sold for $39.95 on May 18, 2023

Keys @ $2.02

39.95/2.02 = 19.78ish keys

MP.TF Sale #3

Sold for $39.99 on June 15, 2023

Keys @ $1.99

39.99/1.99 = 20.10ish keys

MP.TF Sale #4

Sold for $29.95 on July 15, 2023

Keys @ $1.98

29.95/1.98 = 15.13ish keys

MP.TF Sale #5

Sold for $29.95 on July 22, 2023

Keys @ $1.95

29.95/1.95 = 15.36ish keys

MP.TF Sale #6

Sold for $29.95 on July 25, 2023

Keys @ $1.95

29.95/1.95 = 15.36ish keys

Sales @ 9, 10, 11, 14, 15, 15, 15, 15, 20, 20, 20, 24

Taking 10-15