I was confused but now I think I have figured it out so I thought I would share what I found out.
Robert has a banner add that appears at the top of the AVS forum page advertising this unit. If you click on it you can buy it for $650. That is apparently the AVS forum discount Robert was talking about. If you go straight to his website and order from there the price is higher.
The confusion is that the banner add doesn't appear all the time. It looks like it alternates with at least one other ad. So it seems you need to wait for it to appear in order to get the AVS pricing.
Or is there another way Robert?