Thank you Cashew for all these wonderful suggestions #CashtheDEW

Searing Plasma Hot Dogger

https://marketplace.tf/items/tf2/614;5;u15

$29 on March 16 = 17 keys

$30 on March 28 = 18 keys

https://backpack.tf/profiles/76561198162611272#!/compare/1584835200/1585353600

https://backpack.tf/profiles/76561198177719569#!/compare/1585180800/1585267200 bulk

https://backpack.tf/item/8386312096 im 99% sure the rest of these "sales" are gambling or untrace/bulk. Doesn't make sense to add 100 compare links showing that

Seller at 24 for at least a month - https://backpack.tf/item/4874297040Recent sale at ~22 keys on marketplace. I would include it in range.

https://marketplace.tf/items/tf2/614;5;u15

https://backpack.tf/item/8058283065

$42/1.93 = 22