Soap and water are emulsifiers - they use polar heads/tails in their molecules to drag oil away, "cleaning" you

Sale 1

[No OP Trade] Sold with 4.4 keys of sweets for Pro KS Aussie Sniper

X + 4.4 = 38

X = 34

Sniper http://backpack.tf/item/4126762973

Russian http://backpack.tf/item/4157932882

Mini for Rifle

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Sniper%20Rifle Sold for 122.95 on Sep 30

122.95 + 122.95/1.15 = 229.86

229.86/2 = 114.93

Keys were $2.38 at time of sale

114.93/2.38 = 48.3 keys

However, sellers for 38 http://backpack.tf/stats/Strange/Professional%20Killstreak%20Australium%20Sniper%20Rifle/Tradable/Craftable , using 38

Sale 2 OUTLIER

http://www.tf2outpost.com/trade/26894419 Sold for GE Mongolian + S. Hunter Heavy

Rejected an offer of 15 (Idk if i'd call it rejected but he didn't take it so...)

X = 16*0.9 + 0.5*0.9

X = 15

Mongol http://backpack.tf/item/276822605

Russian http://backpack.tf/item/4077743295