https://backpack.tf/profiles/76561197999900716#!/compare/1658880000/1659225600 - ?

https://backpack.tf/profiles/76561198141744030#!/compare/1658275200/1663891200 - ?

https://backpack.tf/profiles/76561199072654974#!/compare/1660694400/1660780800 - ?

https://gladiator.tf/time-machine?item=Sunbeams+Bumble+Beenie&at=2022-08-22T09%3A58%3A00.000Z - The third ? sale was listed for 88 Keys

https://backpack.tf/profiles/76561198114151975#!/compare/1665187200/1665446400 - ?

https://backpack.tf/profiles/76561198163549413#!/compare/1672272000/1672790400 - Sold with a CPS Melted Mop for 116 Keys

https://gladiator.tf/sales?item=Sunbeams%20Bumble%20Beenie&at=2023-01-15T20:47:46.727Z - One was dumped to a bot for 81 Keys

https://backpack.tf/profiles/76561199084784906#!/compare/1670457600/1670544000 - The Mop added ~1.2 Keys of Items for a C9 Hawaiian

https://gladiator.tf/time-machine?item=Circling%20Peace%20Sign%20Melted%20Mop&at=2022-12-09T22:50:52.000Z - That should cap at 13 Keys

There were sellers for far less than 127 when that sale happened.

https://gladiator.tf/time-machine?item=Sunbeams+Bumble+Beenie&at=2022-08-16T20%3A47%3A00.000Z

https://marketplace.tf/items/tf2/31085;5;u17 - There are 2 sellers at ~114 Keys on marketplace + a sale at 115 Keys

https://gladiator.tf/sales?item=Sunbeams%20Bumble%20Beenie&at=2023-02-09T02:51:40.734Z - The person who paid 115 dumped it for 82

https://backpack.tf/item/8976427185 - This one was also dumped for 82 Keys

While there wasn't an explicit amount of Keys for the Mop vs. Beenie in the 116 Key sale, the Mop is small enough that we can estimate the Beenie to be ~103 Keys in that sale with the mini for the Mop at 13 Keys. The sellers 114 came up well after this was made, but 127 itself was high when it happened.

With the multiple buy order dumps, a range of 82 - 115 Keys would work here.