Sale 1:

https://backpack.tf/profiles/76561198083082694#!/compare/1525737600/1525996800

https://backpack.tf/profiles/76561198054758757#!/compare/1525996800/1526083200

Sold for 8 keys(one sold for ref)

Sale 2:

https://backpack.tf/profiles/76561198344933095#!/compare/1523232000/1523318400

https://backpack.tf/profiles/76561198176297517#!/compare/1520640000/1523318400

Sold for 8 keys + 7 ref

Sale 3:

https://backpack.tf/profiles/76561198176297517#!/compare/1523664000/1523750400

https://backpack.tf/profiles/76561198386487210#!/compare/1523664000/1523750400

Sold for 8 keys.

Sale 4:

https://backpack.tf/profiles/76561198386487210#!/compare/1523664000/1523750400

https://backpack.tf/profiles/76561198280336313#!/compare/1523491200/1523750400

Sold for 9 keys.

Sale 5:

https://backpack.tf/profiles/76561198149321215#!/compare/1521849600/1521936000

https://backpack.tf/profiles/76561198274197675#!/compare/1521590400/1521849600

Untraceable.

Sale 6:

https://backpack.tf/profiles/76561198304138933#!/compare/1524355200/1524441600

https://backpack.tf/profiles/76561198236145596#!/compare/1524355200/1524441600

Sold for 8 keys + negligible amount of ref.

Sale 7:

https://backpack.tf/profiles/76561198001833650#!/compare/1517961600/1522800000

https://backpack.tf/profiles/76561198053747026#!/compare/1522540800/1522627200

Bulk.

Sale 8:

https://backpack.tf/profiles/76561198053747026#!/compare/1523836800/1523923200

https://backpack.tf/profiles/76561198382398090#!/compare/1523836800/1523923200

Sold for 8 keys + 6 ref.

Sale 9:

https://backpack.tf/profiles/76561198382398090#!/compare/1523923200/1524096000

https://backpack.tf/profiles/76561198801422966#!/compare/1524009600/1524096000

Sold for 8 keys + ~4.79 ref.

Sale 10:

https://backpack.tf/profiles/76561198801422966#!/compare/1524009600/1524096000

https://backpack.tf/profiles/76561198290529145#!/compare/1524009600/1524096000

Sold for 9 keys.

Sale 11:

https://backpack.tf/profiles/76561198337734785#!/compare/1525996800/1526083200

https://backpack.tf/profiles/76561198146360194#!/compare/1526083200/1526169600

Sold for 8 keys + 23.88 ref

Sale 12:

https://backpack.tf/profiles/76561198146360194#!/compare/1526256000/1526342400

https://backpack.tf/profiles/76561198147254211#!/compare/1526256000/1526342400

Sold with a key for C9 Base Metal Billycock

Metal Mini:

https://marketplace.tf/items/30047;5;u58

2 sales for 11.25, & 7.26 keys.

https://backpack.tf/profiles/76561198385940902#!/compare/1523145600/1523232000

Sold for 10 keys.

Taking 10.5 keys.

Total is 9.5 keys.

Sale 13:

https://backpack.tf/profiles/76561198069206704#!/compare/1526688000/1526774400

Sold for 7 keys.

Sale 14:

https://marketplace.tf/items/30836;5;u6

Sold for ~8.23 keys.

Sales @:

7, 8, 8, 8, 8.17, 8.22, 8.23, 8.26, 8.87, 9, 9, 9.5

https://i.imgur.com/XJ5degj.jpg

Buyers up to 8 keys.

Sellers as low as 8.87.

Taking 8 - 9 keys.