Only recent valid sale:

Sold for a Venenata Stove + TW Razor

http://backpack.tf/profiles/76561198082041730?time=1443942000&compare=1444028400

(52 + 24) X 0.9 = 69

Mini on the Razor:

Sold for a DP Hazmatten (seller at 24, using that)

http://backpack.tf/profiles/76561198126631500?time=1443855600&compare=1443942000

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Unusable sales:

Sale 1:

Sold alongside an Ether Sombrero for a Galactic Phono (ridiculous outlier)

http://backpack.tf/profiles/76561198101113030?time=1449302400&compare=1449388800

Sale 2:

Sold for 50 pure (QS'd in a day)

http://backpack.tf/profiles/76561198082041730?time=1443942000&compare=1443855600

Bish bash bosh, job done ;)