Credit to Shuffle Spy for the freebie :)

https://backpack.tf/item/11928232376

Sale 1) Bulk sale

https://backpack.tf/profiles/76561198082869766#!/compare/1699574400/1699660800

Sale 2) Sold for a Pumpkin Moon Cool Capuchon + Distant Dream Round-A-Bout

https://backpack.tf/profiles/76561198082869766#!/compare/1699747200/1699833600

https://backpack.tf/profiles/76561198090869623#!/compare/1699660800/1699833600

Excluding because the Round-A-Bout has no other sales.

Capuchon Mini

https://backpack.tf/suggestion/658bc5a38199675fa20bee96 - 142.5 Keys

Sale 3) Sold + Static Mist Kazotsky Kick (35 Keys) for a Burning Mountain Cap (190 Keys)

https://backpack.tf/profiles/76561198090869623#!/compare/1699660800/1699833600

https://backpack.tf/profiles/76561198067717452#!/compare/1699747200/1699833600

190 - 35 = 155 Keys

Kazotsky Mini

https://backpack.tf/profiles/76561198067717452#!/compare/1699833600/1699920000 - Dumped for ~35 Keys

https://gladiator.tf/sales?item=Static%20Mist%20Taunt:%20Kazotsky%20Kick&at=2023-11-14T21:04:32.543Z

Sale 4) Sold + Strange Pro KS 2x Spelled Rainblower (27 Keys) for a Burning Boxcar (170 Keys)

https://backpack.tf/profiles/76561198337378097#!/compare/1700611200/1700697600

170 - 27 = 143 Keys, which is rounded to 145 Keys

Boxcar Mini

https://backpack.tf/suggestion/658bc83bc27253d30507cb1d - 170 Keys

Rainblower Mini

https://backpack.tf/profiles/76561198368346333#!/compare/1700265600/1701388800 - 29 Keys

https://backpack.tf/profiles/76561199531606220#!/compare/1702339200/1702425600 - 25 Keys w/o KS

https://backpack.tf/profiles/76561199531606220#!/compare/1698451200/1698537600 - 25 Keys

https://backpack.tf/profiles/76561198337378097#!/compare/1702425600/1702598400 - 25 Keys

https://marketplace.tf/items/tf2/31200;5;u13 - Sold for $349.99 (173 Keys)

That gets rounded to 175 Keys