The creator of the Awesome SK-1 has got another auction up. This time it is a tri-oscillator opto-theremin. Good inside pictures as well as audio samples on a dedicated site with function descriptions.
The auction can be found here
Interestingly enough I just finished work on a tri oscillator with opto control last friday as well! Just been lazy to blog about it. This goes to prove my theory that no matter what people think of, someone will eventually have the same idea and try to make money on it.