Item 1

https://backpack.tf/item/933095765

Duped

Sale 1

https://backpack.tf/profiles/76561198380818616#!/compare/1681948800/1683763200

https://backpack.tf/profiles/76561198140316312#!/compare/1681948800/1682035200

Might have added for a Vivid Plasma Team Captain?

Sale 2

https://backpack.tf/profiles/76561197972195151#!/compare/1683763200/1683849600

https://imgur.com/a/0MFCpKY

~122 keys

Item 2

https://backpack.tf/item/6689088150

Sale 3

https://backpack.tf/profiles/76561198137566942#!/compare/1684108800/1684281600

https://backpack.tf/profiles/76561198170354145#!/compare/1603324800/1684195200

135 keys

Sale 4

https://backpack.tf/profiles/76561198170354145#!/compare/1684195200/1684713600

https://backpack.tf/profiles/76561198056681334#!/compare/1683331200/1685145600

Bulk for a Chiroptera Venenata Napper's Respite

Sale 5

https://backpack.tf/profiles/76561198056681334#!/compare/1685318400/1685404800

https://backpack.tf/profiles/76561198067025442#!/compare/1686614400/1686700800

No clue

Sale 6

https://backpack.tf/profiles/76561198067025442#!/compare/1686960000/1687046400

https://backpack.tf/profiles/76561198211647572#!/compare/1686960000/1687046400

1 for 1 with a Sunbeams Racc Mann?

https://marketplace.tf/items/tf2/31071;5;u17

Recent sale here for $219.99 / $1.99 = ~111 keys

Let's just take buyers as a mini

https://imgur.com/a/mb1SObZ

130 keys

Sale 7

https://backpack.tf/profiles/76561198211647572#!/compare/1687046400/1687219200

https://backpack.tf/profiles/76561198099389110#!/compare/1686873600/1687305600

No clue

Mp.tf

https://marketplace.tf/items/tf2/378;5;u15

$299.99 / $1.98 = ~152 keys (Jul 15)

Total Sales

122, 130, 135, 152

https://imgur.com/a/drGrrvf

122 was a liquid and a dupe sale

Let's round and go with 130 - 150 keys c: