Last time suggesting a price bump from me on this item.

1.6

http://www.tf2outpost.com/trade/10747620: the buyer of the hat agreed to trade an hat 1.4 bud + 5 key

http://www.tf2outpost.com/trade/9239694: was offered 1.6 buds by Kejah, but they ended up buying it from someone else. Ture Blood also offered a Haunted Ghosts Engi cap (worth 1.6-1.8) buds

[note: Just posted this to show that 1.6 is do able]

1.3

http://www.tf2outpost.com/trade/11527298 : Mr. Fox offered 1.3 buds and is the owner of the same hat

http://www.tf2outpost.com/trade/11476942: has a B/o of 1.4 and and sold of 1.3 buds (low end)

http://www.tf2outpost.com/trade/10856881: brought for a Stormy nanobalaclav(adv .9 buds) + 9 key and sweet (.4+ buds)= around 1.3+ buds

http://www.tf2outpost.com/trade/11691478: the owner retracted his offer of 1.5 but still ended getting it so he had to trade between 1.3-1.5 as the owner was not selling it for less

http://www.tf2outpost.com/trade/11800925:sold for bubbling charmers (1.3-1.4 buds)

The lowest selling Stormy V.Merryweather was sold for a stormy trippy(1.1-1.3) http://www.tf2outpost.com/trade/11021820 (technically has an adv of 1.2 but 1.3 is in its price range)