Item 1

https://backpack.tf/item/11995105944

Nothing in this history is anything I can trace / use

Item 2

https://backpack.tf/item/10021761963

Just transfers

Item 3

https://backpack.tf/item/7454376062

Can't use this, mannco.store sale

Item 4

https://backpack.tf/item/5626564272

Sale 1

https://backpack.tf/profiles/76561199067916269#!/compare/1684281600/1684540800

https://backpack.tf/profiles/76561199195213049#!/compare/1684281600/1684368000

Not unusual yet

Sale 2

https://backpack.tf/profiles/76561199195213049#!/compare/1684368000/1684454400

https://backpack.tf/profiles/76561198312886386#!/compare/1682294400/1685923200

Unusualified here

Item 5

https://backpack.tf/item/4140326908

Sale 3

https://backpack.tf/profiles/76561198191233941#!/compare/1685491200/1685577600

https://backpack.tf/profiles/76561198135388328#!/compare/1685836800/1685923200

No clue

Sale 4

https://backpack.tf/profiles/76561198135388328#!/compare/1685923200/1686009600

https://backpack.tf/profiles/76561199072654974#!/compare/1685836800/1685923200

No clue, likely a missing history here

Sale 5

https://backpack.tf/profiles/76561199072654974#!/compare/1686441600/1686528000

https://backpack.tf/profiles/76561198280524116#!/compare/1686441600/1686528000

Looks like ~2.85 keys

I'll cover mp.tf at the end

Item 6

https://backpack.tf/item/3714560553

Sale 6

https://backpack.tf/profiles/76561199052804233#!/compare/1687478400/1687564800

https://backpack.tf/profiles/76561199031791519#!/compare/1687392000/1687564800

Unusualified here

Item 7

https://backpack.tf/item/3298060590

Sale 7

https://backpack.tf/profiles/76561198116849874#!/compare/1684281600/1684368000

https://backpack.tf/profiles/76561198092756250#!/compare/1684368000/1685318400

Unusualified here

Item 8

https://backpack.tf/item/3280700880

Sale 8

https://backpack.tf/profiles/76561199085308746#!/compare/1684281600/1684368000

https://backpack.tf/profiles/76561199172274711#!/compare/1684281600/1684368000

Not unusual yet

Sale 9

https://backpack.tf/profiles/76561199172274711#!/compare/1684454400/1684540800

https://backpack.tf/profiles/76561198074080874#!/compare/1684368000/1684886400

Not unusual yet

Sale 10

https://backpack.tf/profiles/76561198074080874#!/compare/1686182400/1686700800

https://backpack.tf/profiles/76561199498606906#!/compare/1686960000/1687046400

Not unusual yet

Sale 11

https://backpack.tf/profiles/76561199498606906#!/compare/1687046400/1687132800

https://backpack.tf/profiles/76561198987820148#!/compare/1681430400/1688169600

Unusualifed here

Mp.tf

https://marketplace.tf/items/tf2/1113;5;u3004

$6.99 / $1.98 = ~3.55 keys (Jun 12)

$6.99 / $2.00 = ~3.50 keys (Jun 18)

$6.76 / $1.96 = ~3.45 keys (Jul 13)

$6.66 / $1.95 = ~3.40 keys (Jul 31)

$6.76 / $1.95 = ~3.45 keys (Aug 2)

Total Sales

2.85, 3.40, 3.45, 3.45, 3.50, 3.55

https://imgur.com/a/wiVyzhR

Taking 2.85 - 3.55 keys c: