Sales

http://www.tf2outpost.com/trade/23945465 - C9 Dead Cone + BMOC + Spec Sticky Kit.

http://backpack.tf/item/3383000018 - Cone.

http://backpack.tf/item/644312513 - BMOC.

http://backpack.tf/item/3441277534 - Kit.~1.5 keys in Classifieds.

1.4 + 0.6 + 0.1 = 2.1*0.9 = 1.9 buds

http://www.tf2outpost.com/trade/23908659 - Stormy Nickle + 2 keys.

http://backpack.tf/profiles/76561198066650704?time=1420358400

1.8*0.9 + 0.15 = 1.8 buds

http://www.tf2outpost.com/trade/23177988 - Offered on and sold for TaW Softcap

1.7 buds

Nickle Mini ~1.8

http://www.tf2outpost.com/trade/24610782 - Sold for PE Mullet

2*0.9 = 1.8

Mullet mini ~2

http://www.tf2outpost.com/trade/24751509 - Offered 2 pure.

http://www.tf2outpost.com/trade/23613815 - Several offers of 2 pure but nothing more.

Softcap mini ~1.7 buds

http://www.tf2outpost.com/trade/23790027 - 25 keys pure, 1.7 buds at the time.

I found very little on the Mullet, Softcap, and Nickle. Hopefully it will suffice.