well its been a month.

sale 1: sold for orb fire worst nightmare[15 via mini]+flies merryweather[12 via mini]+s.spec ks festive minigun[9 keys via mini]+ a bud[3 keys]

http://backpack.tf/profiles/76561198022280107?time=1430722800

http://backpack.tf/profiles/76561198022280107?time=1430809200

http://backpack.tf/item/223728169 merry

15+12+9+3=39

mini on minigun: cheapest is 9 keys

http://gyazo.com/df79f1b73f6b7cc4bc376ed8749d8fdf.png

mini on nightmare: sold for 15 keys

http://backpack.tf/profiles/76561198060926629?time=1431327600

http://backpack.tf/profiles/76561198060926629?time=1431414000

mini on merry: sold with s.spec ks minigun[2 keys] for c9 carousers capotain[16 via mini]

http://backpack.tf/profiles/76561198136899946?time=1434351600

http://backpack.tf/profiles/76561198136899946?time=1434438000

16*0.9=14.4 rounding to 14

14-2=12

mini on capotain: seller at 16

http://www.tf2outpost.com/trade/26211017

taking final price of 39 keys.