Item 1

https://backpack.tf/item/10777210200

Sale #1

Sold for 44 keys (ID "13110193288" of the unusual matches)-

Seller: https://backpack.tf/profiles/76561198073579100#!/compare/1685491200/1686700800

Buyer: https://backpack.tf/profiles/76561198402994885#!/compare/1685750400/1686873600

Sale #2

Sold for 46 keys (ID "13182516797" of the unusual and keys in the buyer's inventory match)-

Seller: https://backpack.tf/profiles/76561198402994885#!/compare/1687478400/1687824000

Buyer: https://backpack.tf/profiles/76561199156551835#!/compare/1687478400/1687651200

Item 2

https://backpack.tf/item/10746388106

Sale #3

Sold for 42 keys (ID "12989257653" of the unusual and keys in the buyer's inventory match)-

Seller: https://backpack.tf/profiles/76561197982127154#!/compare/1683072000/1683158400

Buyer: https://backpack.tf/profiles/76561199127652476#!/compare/1683072000/1683158400

Sale #4

Untraceable or sold for 53 keys?-

Seller: https://backpack.tf/profiles/76561199127652476#!/compare/1683331200/1683417600

Buyer: https://backpack.tf/profiles/76561199235932842#!/compare/1683331200/1683417600

Sale #5

Untraceable-

Seller: https://backpack.tf/profiles/76561199235932842#!/compare/1683504000/1683590400

Buyer: https://backpack.tf/profiles/76561199192088525#!/compare/1683504000/1683590400

Sale #6

Untraceable-

Seller: https://backpack.tf/profiles/76561199192088525#!/compare/1683590400/1683676800

Buyer: https://backpack.tf/profiles/76561198152394218#!/compare/1686009600/1686441600

Item 3

https://backpack.tf/item/11364996733

Sale #7-8

Likely gambled between OJ and Estel twice-

https://backpack.tf/item/11364996733

Sale #9

Untraceable-

Seller: https://backpack.tf/profiles/76561199245733895#!/compare/1683158400/1683244800

Buyer: https://backpack.tf/profiles/76561198172035674#!/compare/1683158400/1683331200

Sale #10

Untraceable or sold for 21 keys? Still would be unusable-

Seller: https://backpack.tf/profiles/76561198172035674#!/compare/1683504000/1683590400

Buyer: https://backpack.tf/profiles/76561198334039487#!/compare/1683504000/1683590400

Sale #11

Sold for 41 keys-

Seller: https://backpack.tf/profiles/76561198334039487#!/compare/1683504000/1683590400

Buyer: https://backpack.tf/profiles/76561199132184792#!/compare/1683504000/1683590400

Sale #12

Transfer between bot and owner-

Seller: https://backpack.tf/profiles/76561199132184792#!/compare/1683590400/1683676800

Buyer: https://backpack.tf/profiles/76561198086011812#!/compare/1683590400/1683676800

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31216;5;u189

MP.TF Sale #1

Sold for $109.99 on May 3, 2023

Keys @ $2.05

109.99/2.05 = 53.65ish keys

MP.TF Sale #2

Sold for $104.99 on May 11, 2023

Keys @ $2.02

104.99/2.02 = 51.98ish keys

MP.TF Sale #3

Sold for $104.99 on June 2, 2023

Keys @ $1.99

104.99/1.99 = 52.76ish keys

MP.TF Sale #4

Sold for $104.99 on June 14, 2023

Keys @ $1.98

104.99/1.98 = 53.03ish keys

MP.TF Sale #5

Sold for $104.99 on July 5, 2023

Keys @ $2

104.99/2 = 52.50ish keys

MP.TF Sale #6

Sold for $102.99 on July 16, 2023

Keys @ $1.97

102.99/1.97 = 52.28ish keys

Sales @ 41, 42, 44, 46, 52, 52, 53, 53, 53, 54

Taking 44-53 here