Trust me, been there, done that.
The link for the guys email is dead. Cant find his contact info for anything.
I have talked with Richard a few times about it over the years, no results ever.
The VecVox is now made by a guy in Germany called John Maccallan. If you wish to purchase one, please Email him for details.
The email gets bounced back, and I cant find that guy anywhere.
The Atarivox+ also has the vectrex capability apparently. I cannot find one of those either.