Steel beams

I'm sorry, I had to

Sale 1

[No OP Trade] Sold for OF Bombing

X = 12*0.9

X = 11

Bombing http://backpack.tf/item/595240306

Coupe http://backpack.tf/item/1347767255

Trade http://backpack.tf/profiles/76561198089431434?time=1448438400&compare=1448784000

Mini for Bombing

http://backpack.tf/vote/id/567b7c78dea9e95c487f770f 12 keys, using 12

Sale 2

[No OP Trade] Sold with 1.7 keys of sweets for OF Hard Counter

X + 1.7 = 12

X = 10

Counter http://backpack.tf/item/1468543994

Coupe http://backpack.tf/item/1347767255

Trade http://backpack.tf/profiles/76561198073434372?time=1447920000&compare=1448438400

Sale 3

http://backpack.tf/profiles/76561198192917409?time=1449129600&compare=1449302400 Some weird complex sale. Trust me, it looks simple - it isn't

Sale 4

http://www.tf2outpost.com/trade/26941241 Sold for 1.3 keys of metal + 9.3 keys of sweets

B/O for Coupe was 9

X = 1.3 + 9.3*0.9

X = 10

X = 9 (B/O)

Coupe http://backpack.tf/item/751484070

Stuff http://backpack.tf/profiles/76561198073335093?time=1448524800&compare=1443596400 https://gyazo.com/c3c882ac170ad22e7f4b94dd75fbffed