Pricing the unpriced!

Sale 1: https://marketplace.tf/items/tf2/31058;5;u175 - 44.99/1.81 = ~25

https://backpack.tf/item/9683191295

Sale 2 (credits to Vince): https://mannco.store/item/29305 - 34.99/1.67 = ~21

Additional by the King:

21 was later dumped on qs store. Other sale is untraceable:

https://backpack.tf/item/9641863301

https://imgur.com/a/LHG3JBq --- currently listed on SCM for 21 keys (credits Shuffle)

25 resold on SCM but can't tell if it was on the 20th or the 21st

https://backpack.tf/profiles/76561198098595583#!/compare/1634256000/1634342400

https://backpack.tf/profiles/76561198159933043#!/compare/1634688000/1634774400

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=440&market_hash_name=Unusual%20Bat%20Hat

Another sale for 27 keys here

https://backpack.tf/profiles/76561198048792033#!/compare/1637539200/1637625600

https://backpack.tf/profiles/76561198054096076#!/compare/1637539200/1637625600

21-27 should work given the sales.

21-27 it is!