All credit to Kaushu <3

Thanks to Gent for finally catching my math error in the 3rd sale, placing my range at ~15 keys too high :)

Sale #1:

Sold 1:1 for a OF Ballcap (21)

Valuing at 21 keys

No overpay

http://www.tf2outpost.com/trade/25900277

Sale #2:

Sold 1:1 for a Miami Thirst (40)

Valuing at 40 keys

No overpay

Valuing as a high outlier due to majority of other lower sales

http://www.tf2outpost.com/trade/25769861

Sale #3:

Sold with an Aussie Tomislav (9) for a DBD Burglerre (38)

38 * 0.9 - 9 = 25.2 keys rounding to 25 keys

http://www.tf2outpost.com/trade/25761043

Sale #4:

Sold for Steaming Modest Hat (25) + 10 keys

25 * 0.9 + 10 = 32.5 keys rounding to 33 keys

http://www.tf2outpost.com/trade/25472627

http://backpack.tf/profiles/76561198072029369?time=1429167600

http://backpack.tf/profiles/76561198072029369?time=1429254000