1) https://mannco.store/item/440-bubbling-unusual-virtual-viewfinder - sold for $375 on August 30 - exclude

https://mannco.store/item/440-mann-co-supply-crate-key - Keys were at $1.74 on August 30

$375/1.74 = 215 keys

This is below buy orders, so we will exclude this sale. I am also unable to find the correct backpack history around that time period, so it would be safe to say it is in a privated inventory or the account that has it hasn't logged in to backpack.tf

https://gladiator.tf/time-machine?item=Bubbling+Virtual+Viewfinder&at=2022-08-30T21%3A24%3A00.000Z Highest B/O on August 30 was approximately 270 keys

2) 750 keys

https://next.backpack.tf/item/12302836881

Seller: https://next.backpack.tf/profiles/76561198098816836/compare?from=1667088000&to=1667779200

Buyer: https://next.backpack.tf/profiles/76561198040190735/compare?from=1667520000&to=1667779200

Buyer confirmation(Credit to [TGP] Mr.Pablo!): https://gyazo.com/be2467753bb0119b8c79ba4e56aa0512

https://gladiator.tf/time-machine?item=Bubbling+Virtual+Viewfinder&at=2022-11-01T21%3A24%3A00.000Z B/O at 1000 Keys

Albeit it was spelled, it would still support a demanded raise and there are no other sales

Going 750 keys flat.

Please let me know if there's anything else to improve this price suggestion. Thanks!