Once ordered from Hong Kong for β¬70 and really enjoyed it. This is the more expensive of the two versions: one was advertised as plastic and the other Carbon. Has an adjustment ring that works fine even though a small piece of plastic is torn on the inside. But this has more to do with fitting properly than adjusting the helmet. At least I've never had any problems with it.
Β The price excludes accessories but includes scrim net and shipping costs.