Proof below.

Original suggested price is 7-8 buds, needs a drop from 4 month-old price.

Sales:

http://www.tf2outpost.com/trade/15222346

-wanted 10 buds

-cosa+dominations part, bought blizz jeepcap (1.55)+ghosts bubble pipe (5.95) here: http://www.tf2outpost.com/trade/15300546

-dominations: http://www.tf2outpost.com/trade/15338864

-7.3 buds, no overpay as offered

http://www.tf2outpost.com/trade/14178772

-wanted 6.5-8 buds it seems

-seems to have sold for this dp belgian detective (unpriced but is very low): http://www.tf2outpost.com/trade/15031730

-recent offer of harvest trilby (year old price)=~7.5 buds, way too old a price, much lower now

-offer of phos honcho+searing hw (both slightly outdated)=~6.9 buds

-offer of tw cosa+bmoc+sf rl=~5.6 buds

http://www.tf2outpost.com/trade/15050835

-wanted 10 buds

-sold for miami cosa=~5.4 buds

http://www.tf2outpost.com/trade/15373889

-wanted 10 buds

-sold for 5 buds, in a few days, quicksell?

http://www.tf2outpost.com/trade/15447147

-sold for 7 buds

-seller's bp:

http://backpack.tf/id/76561198010597749?time=1384329600

http://backpack.tf/id/76561198010597749?time=1384761600

Current trades:

http://www.tf2outpost.com/trade/15714855

-no notable offers

http://www.tf2outpost.com/trade/15888661

-no notable offers

Sales: 5, 5.4, 7, 7.3

Regarding price range - 5 and 5.4 look much too low, I asked polar bear about this too. So the range is made up from the 2 sales around 7. Not many good offers, so nothing there. Unusual overpay and original prices used.