Sale 1:

https://backpack.tf/profiles/76561198070980833#!/compare/1521936000/1522195200

https://backpack.tf/profiles/76561198309838525#!/compare/1521849600/1521936000

Sold for Aces Metal Drill Hat + DP Fr-0 (11)

Drill hat Mini:

https://backpack.tf/profiles/76561198079648757#!/compare/1520208000/1520553600

Sold for Miami Snaggletooth

Snaggletooth Micro:

https://backpack.tf/profiles/76561198038751161#!/compare/1524182400/1524700800

Sold for 11 keys

https://backpack.tf/profiles/76561198079648757#!/compare/1522368000/1522454400

https://backpack.tf/profiles/76561198038751161#!/compare/1522022400/1522454400

Sold for 15 pure.

https://marketplace.tf/items/229;5;u61

Sold for 36.43 USD.

Keys at 1.97 USD

Total is 36.43 / 1.97 = 18.49 keys

Taking 15 - 18 keys. Average of 16.5 keys

Total is 16.5 + 11 = 27.5 keys

Sale 2:

https://backpack.tf/profiles/76561198309838525#!/compare/1524873600/1524960000

https://backpack.tf/profiles/76561198120225125#!/compare/1524873600/1524960000

Sold for 16 pure

Sale 3:

https://backpack.tf/profiles/76561198309838525#!/compare/1524873600/1524960000

https://backpack.tf/profiles/76561198120225125#!/compare/1524873600/1524960000

Bulk.

Sale 4:

https://backpack.tf/profiles/76561198120225125#!/compare/1524960000/1525046400

https://backpack.tf/profiles/76561198065733542#!/compare/1524960000/1525046400

Bulk.

Sale 5:

https://backpack.tf/profiles/76561198168625615#!/compare/1525910400/1525996800

Bulk.

Other sales are untraceable.

Total sales @:

16, 27.5

Buyers up to 14 keys.

Taking 28 flat.