Using history data from this suggestion https://backpack.tf/suggestion/613b17a3176ca724b8181a90

Backpack.tf Trades

https://backpack.tf/item/10367515136

https://backpack.tf/profiles/76561198151387693#!/compare/1626739200/1626998400

https://backpack.tf/profiles/76561198068351675#!/compare/1626825600/1627257600

Sold for 25 keys

https://backpack.tf/item/10384423496

https://backpack.tf/profiles/76561198069037820#!/compare/1626566400/1627862400

https://backpack.tf/profiles/76561198043115550#!/compare/1626825600/1626998400

Sold for High Five Unusualifier (18 keys)

https://backpack.tf/item/10533971211

https://backpack.tf/profiles/76561198130164115#!/compare/1631836800/1632009600

https://backpack.tf/profiles/76561197964171516#!/compare/1631836800/1631923200

Sold for 24 keys

Marketplace.tf Sales

https://marketplace.tf/items/tf2/31185;5;u183

One sold shortly after the case came out for $100 (40.1 keys)

Backpack.tf Buy Orders

https://i.imgur.com/CPUcpp0.png

Buy orders are in 25 keys range

Untraceable Trades

https://backpack.tf/item/10326883591

https://backpack.tf/item/10553860802

https://backpack.tf/item/10455827313

https://backpack.tf/item/10366139635

https://backpack.tf/item/10339788679

(Bought in Bulk 1)

https://backpack.tf/profiles/76561198263836417#!/compare/1628380800/1628467200

https://backpack.tf/profiles/76561197964171516#!/compare/1628380800/1628467200

https://backpack.tf/item/10455827313

(Bought in Bulk 2)

https://backpack.tf/profiles/76561198847680167#!/compare/1636761600/1637366400

https://backpack.tf/profiles/76561199175513659#!/compare/1637020800/1637280000

https://backpack.tf/item/10588585282

(Sold for 4 Keys?)

https://backpack.tf/item/10366139635

https://backpack.tf/profiles/76561199071504484#!/compare/1625788800/1625875200

https://backpack.tf/profiles/76561197964171516#!/compare/1625788800/1625875200

Price range would be 24.5 to 26.7 from the trades but rounding up to whole numbers seems reasonable considering the current buy and sell orders aren't with decimals