The last guy who suggested this is probably really cool.

Item 1: https://backpack.tf/item/14897947416

Sale 1: 20k pure

https://backpack.tf/profiles/76561198020981163#!/compare/1751673600/1752192000

https://backpack.tf/profiles/76561198064490192#!/compare/1751587200/1752105600

Item 2: https://backpack.tf/item/14812388485

Sale 1: 19k pure

https://backpack.tf/profiles/76561199581722058#!/compare/1751414400/1751500800

https://backpack.tf/profiles/76561198104064829#!/compare/1744416000/1751500800

Item 3: https://backpack.tf/item/15689610184

Sale 1: Untrace

https://backpack.tf/profiles/76561198850121720#!/compare/1756684800/1756771200

https://backpack.tf/profiles/76561198138901669#!/compare/1726790400/1756857600

Item 4: https://backpack.tf/item/14802320951

Sale 1: Bulk (from Quicksell.store bots)

https://backpack.tf/profiles/76561199386704401#!/compare/1751068800/1751155200

https://backpack.tf/profiles/76561199059698603#!/compare/1751068800/1751155200

Sale 2: Untrace

https://backpack.tf/profiles/76561199386704401#!/compare/1751587200/1752192000

https://backpack.tf/profiles/76561199212884852#!/compare/1751932800/1752019200

Sale 3: Incomplete, 7 key histories match, but not all keys registered

https://backpack.tf/profiles/76561199212884852#!/compare/1752796800/1752883200

https://backpack.tf/profiles/76561198119405640#!/compare/1752710400/1752796800

https://backpack.tf/item/8961637771

https://backpack.tf/item/7857355256

https://backpack.tf/item/13911779010

Sale 4: STN dump for 12 keys, 19.33 ref (no keys removed match coming from sale either)

https://backpack.tf/profiles/76561198119405640#!/compare/1755561600/1755820800

https://backpack.tf/profiles/76561199564942025#!/compare/1755734400/1755820800

Item 5: https://backpack.tf/item/14728811076

Sale 1: Untrace

https://backpack.tf/profiles/76561198850178158#!/compare/1750896000/1750982400

https://backpack.tf/profiles/76561199384906333#!/compare/1750809600/1750982400

Sale 2: Bot dump for 14 keys, 53.66 ref

https://backpack.tf/profiles/76561199384906333#!/compare/1753142400/1753315200

https://backpack.tf/profiles/76561199206009808#!/compare/1753228800/1753315200

Sale 3: Untrace

https://backpack.tf/profiles/76561199206009808#!/compare/1754179200/1754265600

https://backpack.tf/profiles/76561198117384982#!/compare/1754179200/1754265600

Sale 4: Untrace

https://backpack.tf/profiles/76561198117384982#!/compare/1754611200/1754697600

https://backpack.tf/profiles/76561199026390261#!/compare/1754611200/1754697600

Sale 5: Untrace

https://backpack.tf/profiles/76561199026390261#!/compare/1754870400/1754956800

https://backpack.tf/profiles/76561198066743294#!/compare/1754352000/1755043200

Item 6: https://backpack.tf/item/14724069681

Sale 1: Untrace

https://backpack.tf/profiles/76561199111073161#!/compare/1756857600/1756944000

https://backpack.tf/profiles/76561199657747540#!/compare/1754524800/1756944000

Item 7: https://backpack.tf/item/14723155897

Sale 1: 14k + 47.11 ref pure connect leaving buyer's side

https://backpack.tf/profiles/76561198074523863#!/compare/1749859200/1750982400

https://backpack.tf/profiles/76561199536459741#!/compare/1750896000/1750982400

Sales at 12k 19.33ref, 14k 47.11 ref, 14 keys, 53.66 ref, 19k, and 20k.

Classifieds link: https://imgur.com/a/Icl0rTY

Omitting the lower 3 sales, as they're all below the current buy orders of 15k 30ref

Two valid in-date sales at 19k and 20k, taking these values for the range.