I was looking to order one of their assassin helmets soon, and I can't find any websites and their store page I had bookmarked is listed as private now. Did they close up shop?
Due to the situation with his daughter and focusing on her, DSB did close shop. You maybe able to find some one who has on that is willing to part with it, but you would have to search for it.
there may be a chance that these will be made again by another producer. there have been talks between Zev (DSB) and others to basically allow the helmets to be cast and sold with his blessing. But that is all in the works and no time table is set. I sold my Assassin at Fandays a few weeks ago, or I would have been able to help you out.
Its my understanding that M-DSB have parted ways. "M" is continuing the helmet biz. You can find all your old favorite helmets here at his new web site.