Item 1

https://backpack.tf/item/10654330651

Sale #1

Untraceable-

Seller: https://backpack.tf/profiles/76561198083698432#!/compare/1682640000/1683158400

Buyer: https://backpack.tf/profiles/76561198044719362#!/compare/1646697600/1682985600

Item 2

https://backpack.tf/item/9716606427

Sale #2

Sold for 24 keys + 39.77 refined? (ID "12965986883" in unusual matches)-

Seller: https://backpack.tf/profiles/76561199032721186#!/compare/1682640000/1682726400

Buyer: https://backpack.tf/profiles/76561198036241064#!/compare/1682208000/1682726400

Sale #3

Sold with 3ish keys worth of sweets for a Nuts n' Bolts Herald's Helm (would be too low given sales for the Helm which would make this be around 16ish keys and lower than buyers for this KE, so unusable)-

Seller: https://backpack.tf/profiles/76561198036241064#!/compare/1683849600/1684022400

Buyer: https://backpack.tf/profiles/76561198064724507#!/compare/1683417600/1683849600

Item 3

https://backpack.tf/item/8833314860

Sale #4

Untraceable-

Seller: https://backpack.tf/profiles/76561199056571155#!/compare/1682294400/1683763200

Buyer: https://backpack.tf/profiles/76561198850178158#!/compare/1682208000/1682294400

Item 4

https://backpack.tf/item/2452341896

Spelled, unusable here

MP.TF Sale #1

Sold for $43.24 on July 19, 2023

Keys @ $1.97

43.24/1.97 = 21.95ish keys

https://marketplace.tf/items/tf2/538;5;u31

Sales @ 22, 24

Taking 22-24 here