He's very good at answering emails. Delivering the goods is the problem.
My experience with "dealing with Mr Pegna" is the exact opposite of yours! I've ordered through his facebook page a "satie 2" 3 or 4 years ago. And yes, it took himĀ 3 to 4 months to build it, but he let me choose the appearance of the theremin. I received it in Paris in a case without paying anything in advance. I paid the announced price by paypal -with no charge for delivery- once I had tried the full features and playability of it.
Since then, I've never had any trouble with it, playing it in several gigs in a rock band. It is a reliable machine, even though I use it for sound effects more than for playing tunes... And this is not due to the playabilty of the machine, but to my laziness!