I think this is a little low for such a good soldier hat with the best effect, but I guess I'll upvote since it's better than no price for now.

http://www.tf2outpost.com/trade/6237651 - Only trade I could verify, for a Cloudy Moon Lucky Shot

Last updated two weeks ago at very nearly the exact price of this suggestion.

Seems to fit tierwise against burning and cloudy moon, which from a quick scan still appear to hold up reasonably well on their current prices.