Credit to Shuffle Spy for all the help!

Sale 1) 97 keys

https://next.backpack.tf/item/12100037082

Seller: https://next.backpack.tf/profiles/76561199072654974/compare?from=1662940800&to=1663027200

Buyer: https://next.backpack.tf/profiles/76561198064724507/compare?from=1662854400&to=1663027200

https://gladiator.tf/time-machine?item=Aces+High+Brainiac+Hairpiece&at=2022-09-13T19%3A35%3A00.000Z - Sold for 97 keys

Here are the screenshots of me purchasing the Aces High Brainiac Hairpiece for 97 keys from the 2 Scrap Yard Bot :

https://gyazo.com/d710a8e24908c6245d88bd6000ceeee2

https://gyazo.com/c6b2c373b5f23246c7d319a9dd3b3472

https://gyazo.com/132c28871c02b7cc13eb7dbdca5303b7

https://gyazo.com/55598581f8c34c42124ab9841591fa33

Shuffle Spy:

That sale should be used here. 10 Keys were added to the Bubbling one

https://backpack.tf/profiles/76561198301015840#!/compare/1668384000/1669766400

With the mini below, this sale will be 109 Keys, and that can be rounded to 110 Keys.

The Bubbling one has these sales:

https://backpack.tf/profiles/76561199199136084#!/compare/1664323200/1664409600 - 106 Keys

https://backpack.tf/profiles/76561198095293350#!/compare/1665532800/1665619200 - 99 Keys

https://backpack.tf/profiles/76561198095293350#!/compare/1669420800/1669507200 - Added 5 Keys for a Dead Presidents Bonk Boy (132 Keys)

https://marketplace.tf/items/tf2/590;5;u34 + https://backpack.tf/item/1764129616 - Sold for $179.99 (~92 Keys)

The Bonk sale should be excluded as a high outlier. 92 - 106 works for the Bubbling Brainiac's price.

The Bonk Boy has the following sales:

https://backpack.tf/profiles/76561199199136084#!/compare/1662940800/1663027200 - 140 Keys

https://backpack.tf/profiles/76561198080212467#!/compare/1668902400/1668988800 - 124 Keys

97 to 110 would work here.