Thx to ๖Set Fire To The Rain๖ for the sug :)

First sale: Sold for a clean scorching flames Tough Guy´s Toque.

Bp of the seller before : https://backpack.tf/profiles/76561198025208249?time=1434697200

Bp of the seller after : https://backpack.tf/profiles/76561198025208249?time=1434783600

Total : 42 keys *0,9 = 37.8 -> 38 keys

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Second sale:

Backpack of the seller before: https://backpack.tf/profiles/76561198048409124?time=1437116400

Backpack of the seller after : https://backpack.tf/profiles/76561198048409124?time=1437634800

Total : 40 Keys

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Third sale:

Sold for a blizz reggae + blizz tyrant (both clean)

My backpack before: https://backpack.tf/profiles/76561197997729682?time=1439190000

My backpack after: https://backpack.tf/profiles/76561197997729682?time=1439276400

Total= 24 * 0,9 + 23 * 0,9 = 22 + 21 = 43 keys

Mini on the reggae :

Before : http://backpack.tf/profiles/76561198042458923?time=1439103600

After : http://backpack.tf/profiles/76561198042458923?time=1439276400

Sold for Cloud 9 Scotch Bonnet ( 22 ) + 1 key in items : 23 keys

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Thus taking the range of 38 to 43 keys.

Supportive criticism welcome