I played one of these this weekend, WOW, so unique, it was the last thing I'd expect to see behind the glass window, from the outside it just looked like an old old video cabinet.
What a great novelty pinball machine. Chatted to some random man at the show and he said the last one of these he saw sold for £5000.
http://www.ipdb.org/search.pl?any=varkon&sortby=name&search=Search+Database&searchtype=quick