Item 1

https://backpack.tf/item/12431647559

Sale 1

https://backpack.tf/profiles/76561198437990110#!/compare/1696377600/1696636800

https://backpack.tf/profiles/76561198148694767#!/compare/1696636800/1696723200

Bulk for a Frostbite Helmet Without a Home

Item 2

https://backpack.tf/item/9103176704

Sale 2

https://backpack.tf/profiles/76561198159065478#!/compare/1698969600/1699315200

https://backpack.tf/profiles/76561198132741569#!/compare/1698969600/1699142400

Looks like a bulk buy?

Item 3

https://backpack.tf/item/7145617018

Sale 3

https://backpack.tf/profiles/76561198016255857#!/compare/1692835200/1693353600

https://backpack.tf/profiles/76561199139034449#!/compare/1693526400/1693612800

No clue

Sale 4

https://gladiator.tf/time-machine?item=Pastel%20Trance%20Taunt:%20Zoomin%27%20Broom&at=2023-10-05T17:31:23.000Z

https://backpack.tf/profiles/76561199139034449#!/compare/1696464000/1696550400

https://backpack.tf/profiles/76561199112790366#!/compare/1696550400/1696636800

27 keys

Sale 5

https://backpack.tf/profiles/76561199112790366#!/compare/1698364800/1698451200

https://backpack.tf/profiles/76561198142244035#!/compare/1698192000/1698364800

No clue

Sale 6

https://backpack.tf/profiles/76561198142244035#!/compare/1698364800/1698451200

https://backpack.tf/profiles/76561198117597416#!/compare/1698364800/1698451200

21 keys

Item 4

https://backpack.tf/item/5482374715

Sale 7

https://backpack.tf/profiles/76561198129514379#!/compare/1692921600/1694044800

https://backpack.tf/profiles/76561199059160806#!/compare/1693008000/1693094400

No clue

Item 5

https://backpack.tf/item/5327087408

Sale 8

https://backpack.tf/profiles/76561198070022327#!/compare/1694649600/1694995200

https://backpack.tf/profiles/76561199114336513#!/compare/1694822400/1695081600

Likely bulk for a Spooky Night Taunt: Zoomin' Broom?

Sale 9

https://backpack.tf/profiles/76561199114336513#!/compare/1696636800/1696723200

https://backpack.tf/profiles/76561198133625910#!/compare/1696636800/1696809600

No clue

Item 6

https://backpack.tf/item/4475395434

Sale 10

https://backpack.tf/profiles/76561198078324219#!/compare/1698624000/1698710400

https://backpack.tf/profiles/76561198311498888#!/compare/1698624000/1698710400

No clue

Item 7

https://backpack.tf/item/4375312113

Sale 11

https://backpack.tf/profiles/76561199019018080#!/compare/1697068800/1697155200

https://backpack.tf/profiles/76561198170203261#!/compare/1696982400/1697155200

23 keys

Sale 12

https://backpack.tf/profiles/76561198170203261#!/compare/1697587200/1697673600

https://backpack.tf/profiles/76561198055421322#!/compare/1697587200/1697673600

More or less a 1 for 1 with a Pastel Trance Taunt: The Balloonibouncer?

This is gonna be too high to use here, and too low to use there

Item 8

https://backpack.tf/item/4280104520

Sale 13

https://backpack.tf/profiles/76561198235702176#!/compare/1699488000/1699660800

https://backpack.tf/profiles/76561198035013576#!/compare/1699574400/1699660800

No clue

Sale 14

https://backpack.tf/profiles/76561198035013576#!/compare/1700179200/1700265600

https://backpack.tf/profiles/76561199132184792#!/compare/1700179200/1700265600

~17 keys

Sale 15

Bot - - > Bot Owner

Item 9

https://backpack.tf/item/4263443255

Sale 16

https://backpack.tf/profiles/76561198225717852#!/compare/1693353600/1693440000

https://backpack.tf/profiles/76561199059160806#!/compare/1693872000/1693958400

Unusualified somewhere in between here

Item 10

https://backpack.tf/item/4261505300

Sale 17

https://backpack.tf/profiles/76561198041186431#!/compare/1697587200/1697673600

https://backpack.tf/profiles/76561199389372563#!/compare/1697414400/1697587200

No clue, can't say for sure

Item 11

https://backpack.tf/item/4257152592

Sale 18

https://backpack.tf/profiles/76561198283108046#!/compare/1693440000/1693526400

https://backpack.tf/profiles/76561198132741569#!/compare/1693958400/1694304000

No clue

Sale 19

https://backpack.tf/profiles/76561198132741569#!/compare/1698451200/1698537600

https://backpack.tf/profiles/76561198439741942#!/compare/1698019200/1698883200

The burstchester went through another history before going to seller, but it seems a bit high / incomplete to use

Mp.tf

https://marketplace.tf/items/tf2/30672;5;u3121

$79.99 / $2.04 = ~39 keys (Oct 9)

Total Sales

17, 21, 23, 27, 39

https://imgur.com/a/URejniV

39 is too high

17 was a buyer dump

Running with 21 - 27 keys c: