Making the suggestion, because no one else did. The other guy suggested here: http://backpack.tf/vote/id/51a7aa6c4bd7b8e53900000f

But enough with that, let's get to the thing.

The guy paid about 6.6 buds from the hat by looking from the picture he gave us: http://i.imgur.com/OfhC6RH.png

(Note: The Armored Authority is Searing Plasma)

Because this unusual is 1 of 1 in the world it should not need a range untill there comes another one.

He is also trying to sell the hat he owns: http://www.tf2outpost.com/trade/10951437

Most of the offers he has got are the new effects, so it is unclear that how much the items would pay if he would take the offer.