Item 1:

https://backpack.tf/item/13649714035

Sale 1:

https://backpack.tf/profiles/76561199183171982#!/compare/1748736000/1748822400

https://backpack.tf/profiles/76561199147939995#!/compare/1748217600/1748822400

Inventory purchase

Sale 1 & 2:

https://marketplace.tf/items/tf2/31380;5;u3125

Sold for $19.9 on the 19.05.2025

Sold for $19.99 on the 22.07.2025

Keys were $1.95 on the 19th (19.9/1.95) = 10.2 keys

Keys were $1.99 on the 22nd (19.99/1.99) = 10.04 keys

Rounding both down to 10 keys

Sellers -

BPTF - https://imgur.com/a/Ibsr8Ia - https://backpack.tf/item/13638359493 - 9 keys (1 month unsold)

MPTF - https://marketplace.tf/items/tf2/31380;5;u3125 - None

STN - https://stntrading.eu/item/tf2/Unusual+Eldritch+Horror+Taunt%3A+Roar+O%27War

SCM - https://imgur.com/a/BNekUqJ - https://steamcommunity.com/market/listings/440/Unusual%20Taunt%3A%20Roar%20O%27War?filter=+Eldritch+Horror - 1 @ $35.50AUD (~9.3 keys), 1 @ $75.94AUD (19.98 keys)

Sales

10, 10

Due to the unsold at 9 and two sales at 10, going with 9 - 10 keys