Sale 1:

https://backpack.tf/profiles/76561198046413183#!/compare/1563321600/1563753600

https://backpack.tf/profiles/76561198972279551#!/compare/1563148800/1563321600

https://backpack.tf/profiles/76561198972279551#!/compare/1563321600/1563408000

https://backpack.tf/profiles/76561198363395191#!/compare/1563235200/1563321600

Untrace

sale 2:

https://backpack.tf/profiles/76561198363395191#!/compare/1563580800/1563753600

https://backpack.tf/profiles/76561198055972894#!/compare/1563580800/1563667200

Sold for 9 keys

sale 3:

https://backpack.tf/profiles/76561198055972894#!/compare/1563580800/1563667200

https://backpack.tf/profiles/76561198159799709#!/compare/1563580800/1563667200

Can trace 5 keys

Sale 4:

https://backpack.tf/profiles/76561198159799709#!/compare/1563580800/1563667200

https://backpack.tf/profiles/76561198302123975#!/compare/1563580800/1563667200

Sold with 1 key for Blue Mew FT SMG

use there

Sale 5:

https://backpack.tf/profiles/76561198302123975#!/compare/1564272000/1564531200

https://backpack.tf/profiles/76561198140213386#!/compare/1563580800/1564531200

Sold for spells

Sale 6:

https://backpack.tf/profiles/76561198140213386#!/compare/1564531200/1564617600

https://backpack.tf/profiles/76561198327456722#!/compare/1564272000/1564617600

Sold for ~9.5 keys

Sale 7:

https://backpack.tf/profiles/76561198327456722#!/compare/1564704000/1564790400

https://backpack.tf/profiles/76561198251978870#!/compare/1564704000/1564790400

https://backpack.tf/profiles/76561198376347529#!/compare/1500508800/1564790400

https://backpack.tf/profiles/76561198323565601#!/compare/1564704000/1564790400

Untrace

Sale 8:

https://backpack.tf/profiles/76561197997331749#!/compare/1568419200/1568505600

https://backpack.tf/profiles/76561198374206487#!/compare/1568419200/1568505600

Sold for keys or mmph...

Sale 9:

https://backpack.tf/profiles/76561198374206487#!/compare/1568937600/1569024000

https://backpack.tf/profiles/76561198118391968#!/compare/1568937600/1569024000

Sold for DP Sober + ~4 keys in sweets

use there

Sale 10:

https://backpack.tf/profiles/76561198118391968#!/compare/1568937600/1569024000

https://backpack.tf/profiles/76561198348624308#!/compare/1568937600/1569024000

Sold for smoking Climbing(10)

Sale 11, 12:

https://marketplace.tf/items/tf2/30969;5;u36

$20.67 / $1.82 = 11.36 keys

$27.99 / $1.82 = 15.38 keys

Total sales @:

9, 9.5, 10, 11.36, 15.38 keys

buyer at 8.5 keys,

poorly bumped seller for 10 keys,

taking 9 - 11 keys, conserving around unsold.

https://i.imgur.com/lHIlKre.png