2 of these in existance, both on outpost. Bit difficult to find data on this hat as it has only sold a few times recently and mostly for unpriced hats.

http://www.tf2outpost.com/trade/10924990 - B/O 7 buds, offers of:

-Ghosts Lucha + Nuts Barnstormer = ~6.7 buds

http://www.tf2outpost.com/trade/13237906 - B/O 12 buds

Looking at bp history, looks as if he bought for 2 pure + 98 keys = 6.5 buds

-best offer Secret Lid(~6 buds)

http://www.tf2outpost.com/trade/13239089 - B/O 10 buds

Sold for Time Warp Scopers

http://www.tf2outpost.com/trade/12773505

Sold for Killawat Bolted Bicorne

http://www.tf2outpost.com/trade/11785443 - B/O 6 buds

Sold with 1 bud for Secret Jeepcap(~5.4 mid price)

5.4 - 1 = ~4.4 buds (outlier)

both current owners have no notable offers, they have B/Os of 7.5 and 12.