There are a few Davida Pudding Bowl helmets available on Ebay right now for $225...
http://cgi.ebay.com/ebaymotors/Davida-Classic-Pudding-Bowl-Helmet-_W0QQcmdZViewItemQQhashZitem2eb37e6cb1QQitemZ200579902641QQptZApparelQ5fMerchandise
Just bought the silver one shown with the leather face...