This helmet was particularly well reviewed by COGers, among others, and I managed to find a medium (!) in shiny black, for 160 bucks free shipping at this link:
http://www.ebay.com/itm/182261760893?_trksid=p2057872.m2749.l2649&var=484747392585&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/182261760893?_trksid=p2057872.m2749.l2649&var=484747392585&ssPageName=STRK%3AMEBIDX%3AIT