Sales on this hat: https://backpack.tf/item/9336925666

Some movement here, probably bulk otherwise:

https://backpack.tf/profiles/76561199103818277#!/compare/1621641600/1621728000

https://backpack.tf/profiles/76561198040186479#!/compare/1621641600/1621728000

This looks like trade for starstorm slumber bandito for beanie + 2 keys, beanie was probably traded away quickly:

https://backpack.tf/profiles/76561198040186479#!/compare/1624320000/1624406400

https://backpack.tf/profiles/76561198121927155#!/compare/1624320000/1624406400

bandito was recently priced at 19.5k, which would give the beanie a value of 17.5k, which seems rather high but not sure

EDIT: B/O caps this sale at 15k - https://gladiator.tf/listings/60d0b97cc9ce34a6598c3c01 - but nonetheless the same reasoning applies for excluding it here

Sale for 12k + enough ref to put this over the half key mark:

https://backpack.tf/profiles/76561198101018572#!/compare/1624320000/1624406400

https://backpack.tf/profiles/76561198121927155#!/compare/1624320000/1624492800

Rounds up to 13k

Looks like blizzardy dayjogger + bomb beanie for a hot pro ks festivized quack canvassed degreaser:

https://backpack.tf/profiles/76561198158206236#!/compare/1626652800/1626739200

https://backpack.tf/profiles/76561198101018572#!/compare/1626393600/1626739200

degreaser has no recent sales except for what looks like a tradeback/loan: https://backpack.tf/item/7661540815 (also probably bulk)

excluding this sale.

Sold to gladiator bot for 9k 8ref: https://gladiator.tf/sales?item=Gourdian%20Angel%20Bomb%20Beanie&at=2021-08-24T06:51:04.713Z

which is also the latest sale in this history: https://backpack.tf/item/9336925666

Given the 15k sale was immediately followed by a 13k sale on the same day, might be better to exclude it as a high sale here. Taking 9-13k.