Looking to buy a used professional theremin

I am starting to perform professionally after 8 years of owning a basic Moog Etherwave and want to invest in a pro theremin....the problem is there are non on the market. I very much wanted a Wavefront RCA Classic but spoke to owner and he is no longer building them. Is anyone selling or knows of anyone interested in selling either a Wavefront RCA Classic or a Moog Etherwave Pro? I know the later is quite rare and their prices can be super inflated. Thanks! 

By professional do you mean stable, 8 octave range and no need to use vibrato unless you want to?

http://harrisoninstruments.com/302/302_description.html

new 400 dollars.

It took me two weeks to adjust to the different antenna set up. Three weeks to outperform my previous level of play.

I could use a peer, I currently have none. It is easier to play.