Stumbled upon these sales.

Item 1:

https://backpack.tf/item/2032699218

Has Voices from Below. Typically does not add a whole lot.

Sale 1:

https://backpack.tf/profiles/76561197963394917#!/compare/1709251200/1709337600

https://backpack.tf/profiles/76561197963394917#!/compare/1709251200/1709596800

Sold for a Knifestorm Bombing Run (617.5) + 50 keys pure = 667.5. I only found 50 matching key histories.

Sale 2:

https://backpack.tf/profiles/76561197987314855#!/compare/1708214400/1708300800

https://backpack.tf/profiles/76561199393293102#!/compare/1708214400/1708300800

Untraceable. Compare for user soku is pretty odd on this day.

Sale 3:

https://backpack.tf/profiles/76561198415564349#!/compare/1708128000/1708387200

https://backpack.tf/profiles/76561199393293102#!/compare/1708128000/1708300800

Sold for 500 keys pure. Histories match.

Knifestorm Bombing Run Mini:

https://backpack.tf/suggestion/66185c438328af382c05ef05

Open suggestion @ 600-635 = 617.5

Sellers:

https://imgur.com/a/tySypwf

-One day old VFB seller @ 850.

Sales @ 500 & 667.5, which I will round to 670.

Rolling with 500-670.