They stopped production a few years ago when the economy went south. As far as I understand, the 41 was sold to Bracewell Yachts, and the 31 went to another investor. A new 31 was launched in late 2011, but I think that was the last one. http://www.waterlineboats.com/2011/new-camano-31-launched/
We almost bought one last year, so put a lot of research into it - great boats, by the way. I'm not surprised it isn't listed in NADA, which tends to only list smaller and high production boats. When we were deciding how much to offer on a Camano, we called BoatUS and got a quote from them. They are all semi-custom when it comes to options, so fair value is really going to be specific to each boat (and, of course, condition is a big driver of value).
Good luck, Allen! Camano is an amazing boat and I'm sure it won't last long on the market. We actually read all through your blog when we were shopping, and would probably be coming to see it if we hadn't already bought a new boat.