Might as well, it has been requested :3

I had to include 5 to prove 3 sales weren't outliers...

Sale 1

http://www.tf2outpost.com/trade/24933014 Sold for PE Spartan + 7 keys pure

B/O for Executioner was 4

B/O for Spartan was 5

X = 4.65*0.9 + 0.6

X = 4.8

X = 4 (B/O)

Keys http://backpack.tf/profiles/76561198155510093?time=1422986399#page10

Exec http://backpack.tf/item/2703704299

Spartan http://backpack.tf/item/203946349

Sale 2

http://www.tf2outpost.com/trade/24727736 Sold for Phos Guad + PFetti Mullet

B/O for Exec was 4.5

X = 3.05*0.9 + 1.2*0.9

X = 3.8

Mullet http://backpack.tf/item/1745670077

Guad http://backpack.tf/item/2312990304

Exec http://backpack.tf/item/2703704299

Mini for Mullet

http://www.tf2outpost.com/trade/25023767 Selling for 1.2, using 1.2

Sale 3

http://www.tf2outpost.com/trade/24234369 Sold for Steaming Veil

B/O for Veil was 4.5

X = 3.2*0.9

X = 2.9

Veil http://backpack.tf/item/876758264

Exec http://backpack.tf/item/2703704299

Sale 4

http://www.tf2outpost.com/trade/24915101 Sold for Level 1 Max

B/O for Executioner was 42 keys (3.4)

X = 3

Max http://backpack.tf/item/816557707

Exec http://backpack.tf/item/1603360510

Sale 5

http://www.tf2outpost.com/trade/24175526 Sold for 48 keys pure

B/O for Exec was 50 keys

X = 3.2

Keys http://backpack.tf/profiles/76561198104509618?time=1421136000#page4