History 1: https://backpack.tf/item/7460319484

Untrace:

https://backpack.tf/profiles/76561198453530349#!/compare/1639094400/1639180800

https://backpack.tf/profiles/76561198280524116#!/compare/1639008000/1639094400

Bulk/Account transfer:

https://backpack.tf/profiles/76561198280524116#!/compare/1639180800/1639267200

https://backpack.tf/profiles/76561198029074524#!/compare/1639180800/1639267200

listed on mp at $15.79 (~8.62 keys)

~~

https://mannco.store/item/440-toxic-terrors-unusual-taunt-the-box-trot

$8.83 / $1.68 = 5.26 keys ~5.5 keys

~~

https://marketplace.tf/items/tf2/30615;5;u3046

$11.29 / $1.87 = 6.04 keys ~6 keys

$15.99 / $1.87 = 8.55 keys ~8.5 keys

Unsolds in pure:

5.74 keys https://backpack.tf/item/8553890891 (had lower buyouts: https://gladiator.tf/listings/61aa7cc91867ca83246003d8 https://gladiator.tf/listings/619ea5ff5c5e170f83e8f668 https://gladiator.tf/listings/6194f814d7a87ee95eca0a97 ...)

7 keys for a year https://backpack.tf/item/7443260477

8.5 is clearly an outlier here, and I also don't think 6 should be included given the seller at 5.74 has had trouble selling at lower buyouts

Taking 5.5 flat for now