4th Time Lucky

Sale 1:

Sold for scorching Lid: 130 x 0.9 = 117 < 120

http://www.tf2outpost.com/trade/25552236

http://www.tf2outpost.com/trade/25614986

Sale 2:

Sold for OF viewfinder: 92 x 0.9 = 82.8 < 83

http://www.tf2outpost.com/trade/25674543

http://www.tf2outpost.com/trade/25610233

Sale 3:

Sold for PE Meryweather + Miami nights mask + S. Frying Pan: (84.5 + 49 + 10 ) x 0.9 = 129.15 < 130

http://www.tf2outpost.com/trade/25877074

http://www.tf2outpost.com/trade/25764759

Sale 4:

Sold for Scorching Merryweather: 95 – 12 = 83 < 85

http://www.tf2outpost.com/trade/25952954

http://www.tf2outpost.com/trade/25934702

http://backpack.tf/profiles/76561198112861807?time=1431371206

http://backpack.tf/profiles/76561198112861807?time=1431414000

Conclusion:

Sales at:

130

120

86 (outlier)

85 (outlier)

This guy was offered 110 keys: http://www.tf2outpost.com/trade/26235672 He declined, making the 85 and 86 sale invalid.

Credits to Surs, Randy, Foamy and Merndy for the help.

Constructive criticism welcome,

Have a nice day.