Thanks Hidog. Good info.
I have used Audiogon on a number of occasions, and I usually have a lot of questions for the person. As of yet, I've had excellent luck with both Paypal and Audiogon. If information is not quickly forthcoming or sounds in any way shady, I will typically tell them I'm not interested. More often than not, when I send the first barrage of questions, I won't even get a response from people who are not serious about selling the product. I like Audiogon's mututal feedback system - both parties have to review and approve the feedback left by the other person and then approved by Audiogon.
I don't mind going after something like a used receiver for $200-300, but when you get up to something that is newer and in the $1K and up range, I'd prefer to go to a local shop and pick one up new, just because I want a place to go to and someone to deal directly with if it has a problem.