Halloween effect, 2 in existance, 1 ever in the market, Only one recent and usable sale in the past months.

http://www.tf2outpost.com/trade/19941152

Sold for a Burning Flames Trophy Belt (9.8) + 10 keys in sweets (0.5) ~ 10.3

Screenshot of chat with buyer ~ http://prntscr.com/49nw0i

~

As it's a rare hat and there's ever been only ONE in the market, and with only one recent sale (rest are 2 months+), a flat 10.3 seems fair.

bye