9 month old price.

http://www.tf2outpost.com/trade/20288557

Sold for a Black painted B.M.O.C + 1 key (11 keys w/ overpay)

http://www.tf2outpost.com/trade/20254867 -> http://www.tf2outpost.com/trade/20308565 + http://www.tf2outpost.com/trade/20308535

Sold for a Collector's Professional KS Widowmaker + Specialized KS Knife + Specialized Carbonado Sniper Rifle

http://puu.sh/9LCoC/60d2bb340e.jpg Spec. KS Knife kits sold for $6.08 at the time, which is about 2 keys

http://puu.sh/9LCwC/39e6df591d.jpg Spec. KS Sniper Rifle kits sold for $4.02 at the time, which is about 2 keys

http://puu.sh/9LGyn/d3adf3afe4.jpg Professional KS Widowmaker kits sold for $9.34 at the time, which is about 4 keys

11 keys w/ overpay

http://www.tf2outpost.com/trade/19857381

http://backpack.tf/profiles/76561198060710029?time=1403506800

Sold for 13 keys.