the astro sonic came in a variety of models and combinations (TV stereo, LP stereo, etc) It was also highly advertised ("see how beutiful music can be" eluding to the nice furniture type console, rather than the actual music!)
Because of that,
in general, they are quite common, and dont really fetch much on the collectors market.
hope this helps.
If it does, do me a favor, and tell people about
http://antique-shop.com