Resuggestion, was resold to a buy order for $28 on Marketplace. That sale is below buyers, but I'm removing 31 from the range given it was resold very quickly for half what it was bought for.

https://backpack.tf/item/7034096609

3 sales on MP, $35 , $55 and $28.

https://marketplace.tf/items/tf2/401;15;u703;w3;pk305;kt-3

https://marketplace.tf/items/tf2/401;5;u703;w3;pk305;kt-3

SCM -

https://steamcommunity.com/market/listings/440/Unusual%20Professional%20Killstreak%20Anodized%20Aloha%20Shahanshah%20%28Field-Tested%29

£14.49/1.85 = 8 keys

£51.92/1.77 = 29 keys

£28.35/1.79 = 16 keys

£39.84/1.8 = 22 keys

At the time of these sales, buyers peaked at 18 keys. 19 key buyer is a day old. https://imgur.com/a/q0mzD3K

8, 14, 16, 20, 22, 29, 31. Taking 20-29.

Any input appreciated, feel free to comment. Have a good one!

Another sale, $55 on MP. 29.1 keys, fits in the range.