proof from sellers:

http://www.tf2outpost.com/trade/15629437 has a person frantically trying to add him and another person offering 27 keys if he paints it pink, his B/O is 1.5 buds which seems to be quicksell price

http://www.tf2outpost.com/trade/15370974 B/O is 2 buds, rejected offers of orbiting fire noble nickel accessment of hats and 30 keys(1.5 buds today)

proof from previous sellers:

http://www.tf2outpost.com/trade/14872501 had a B/O of 36 keys a month ago, sold for strange gunslinger,strange PDA and 25 refined(35 keys 1 refined at the time)