https://backpack.tf/item/8310973733 - Fresh unbox

https://backpack.tf/item/6894145741 - 2 Sales

https://backpack.tf/item/6946770465 - No indate sale

https://backpack.tf/item/10042436657 - No indate Sale

https://backpack.tf/item/4236626115 - No indate Sale

https://backpack.tf/item/7696531610 - No indate sale

Sales 1-3

https://marketplace.tf/items/tf2/30647;5;u96

1) 44.99/1.83 = 24.5

2) 44.99/1.89 = 23.8

3) 44.99/1.79 = 25.1

Sale 4)

https://mannco.store/item/20278

45/1.67 = 26.9

Sale 5)

18 Keys and 41 Refined

https://backpack.tf/profiles/76561198074479778#!/compare/1634774400/1635724800

https://backpack.tf/profiles/76561198376885782#!/compare/1635638400/1635811200

Sale 6)

https://backpack.tf/profiles/76561198376885782#!/compare/1635638400/1635811200

https://backpack.tf/profiles/76561198039442850#!/compare/1635638400/1635984000

Sold for a Electric Hat Protector Phononaut + 3 Keys

Mini for Electric Hat Protector Phononaut

https://mannco.store/item/22567

36.99/1.68 = 22 Keys + 3 = 25 keys

https://mannco.store/item/440-voltaic-hat-protector-unusual-phononaut - $45 (28 Keys), but then this got dumped to quicksell.store immediately

https://gladiator.tf/listings/61d089027938693a8abe77ae - With quicksell.store unable to sell the 2 they have for a month, 27 looks to be high.

Sale at 18 Keys can be rounded to 19

Sale at 24.5 can be rounded to 25

Sale at 23 can be rounded to 24

Sale at 25 rounded to 25

Sale at 26.9 can be rounded to 27

This gives us the range of 19-27, excluding the 19 as it looks like it was a buy order and 27 as 2 went unsold for a month. Taking 24-25