14 is the lucky number here guys

Sale 1

http://www.tf2outpost.com/trade/26709449 Sold for Spec KS Aussie FaN

X = 15.3*0.9

X = 14

FaN http://backpack.tf/item/3561755438

Hoodie http://backpack.tf/item/2500762007

Mini for FaN

http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Australium%20Force-A-Nature Sold for $40.54 on August 6th

40.54 + 40.54/1.15 = 75.79

75.79/2 = 37.90

Keys were $2.47 at time of sale

37.90/2.47 = 15.3 keys

Sale 2

[No OP Trade] Sold for 10 keys + a bud + 1 key in sweets

X = 10 + 3.5*0.9 + 1*0.9

X = 14

Hoodie http://backpack.tf/item/2234077020

Stuff https://gyazo.com/5fc640ec443d77844f442003ce8d8298 http://backpack.tf/profiles/76561198138336816?time=1441004400&compare=1441090800

Sale 3

http://www.tf2outpost.com/trade/26818982 Sold for Searing Bombing

Bombing had no trade, presuming offered

X = 16*0.9

X = 14

Bombing http://backpack.tf/item/1311866529

Hoodie http://backpack.tf/item/2234077020

Mini for Bombing

http://backpack.tf/vote/id/55e98536b98d88145c8b4567 16 keys, using 16 keys