Sold for a PE mining (5.4) + DBD brainiac (5.4) + Haunted Ghosts Boming Run (1) + Logo stuntman (0.9) ~ 12.7 buds:

http://www.tf2outpost.com/trade/24551417

Mini for mining light:

http://www.tf2outpost.com/trade/24736721 - sold for P.fetti TC (6)

Mini for brainiac:

http://www.tf2outpost.com/trade/24574853 - sold for DBD exe + 6 keys ~ 6 buds (2 others in the market with this b/o as well)

Mini for bombing:

http://www.tf2outpost.com/trade/24665875 - sold for 17 keys (1.1)

Sold for Cloudy mancer (11.7) + 3 keys ~ 12 buds:

http://www.tf2outpost.com/trade/22570280

Mini for mancer:

http://www.tf2outpost.com/trade/23890667 - offered with 2 buds on an Arcana tree (13 buds, I'm using 15 buds for tree value as the Arcana tree suggestion was wrong and thus the lower end is invalid)

http://backpack.tf/profiles/76561198060511598?time=1417680000 - mancer + 2 buds

Sold for Burning Hermes (7.4) + Demonflame robin (2.7) + 5 buds ~ 15 buds:

http://www.tf2outpost.com/trade/24148493

Outlier:

Sold for 7 buds + Terror-watt rack (4.1) ~ 11.1 buds (went pretty fast):

http://www.tf2outpost.com/trade/24551271

12-15 buds seems reasonable.