Proof below.

3 month-old price.

Sales:

http://www.tf2outpost.com/trade/15365877

-sold for 1 bud+8 keys=~1.5 buds

-took 1 day but this is still close to its value

http://www.tf2outpost.com/trade/15183670

-seems to have sold for 33 keys=~1.9 buds

-same guy offered here: http://www.tf2outpost.com/trade/11674885

http://www.tf2outpost.com/trade/15130639

-wanted 2 buds

-seems to have sold for this white v. bills: http://www.tf2outpost.com/trade/15158034

-~1.4 buds

-a little low, look at the too regular offers of 1.4 below

Current trades (with prices)

http://www.tf2outpost.com/trade/11674885

-wants 2 buds, 5 months old

-offer of v. white bills=~1.4 buds

-offer of nnb noble=~1.4 buds

-offer of planets ck=~1.4 buds

-offer of steaming metal drill=~1.4 buds

-offer of 33 keys=~1.9 buds

-offer of smoking juju=~1.6 buds

http://www.tf2outpost.com/trade/14171126

-wants 2 buds?

http://www.tf2outpost.com/trade/15351187

-b/o of 2.2 buds

-had offer of 2 buds (retracted) however looking at the many b/os o 2 buds and someone wanting that for 5 months this looks a little high

Sales: 1.4, 1.5, 1.9

1.4 seems a little low, 2 seems too high. Simple range of 1.5-1.9 based on sales. Unusual overpay and original prices used.