Untrace, but snapshot suggests 12.1k: https://gladiator.tf/listings/60ddf74595dbf8320eec87ae

https://backpack.tf/profiles/76561198172035674#!/compare/1625097600/1625184000

https://backpack.tf/profiles/76561198453530349#!/compare/1625097600/1625270400

Under buyers either way, excluding

Sold for 12k 3.44ref + Pro KS Festive Backburner (2.69k according to buy orders):

https://backpack.tf/profiles/76561198453530349#!/compare/1626998400/1627084800

https://backpack.tf/profiles/76561198088671607#!/compare/1626998400/1627171200

Bot's B/O was at 15k: https://gladiator.tf/listings/60fc53ac04021b4c08d4e84e

Sale rounds up to 15k either way.

Bulk (BP sale):

https://backpack.tf/profiles/76561197987579006#!/compare/1624924800/1625011200

https://backpack.tf/profiles/76561197966756586#!/compare/1624838400/1624924800

Move to MP: https://backpack.tf/item/3147730645

Sold at auction for 15k: https://scrap.tf/auctions/9LB4UW

(scrap.tf auto adjusts auction values in post according to fluctuating key prices, explaining why it displays as 15k 15ref)

Two sales at 15k, taking that.