As has been stated, a dealer can NOT advertise below a certain price point because it violates their dealer agreements.
There isn't a single product I sell that doesn't have a MAP (minimum advertised price). As a dealer, you are stuck. Would you all be complaining about people advertising MSRP?
Unless you're paying the fees to be considered a full blown advertising dealer, you can't post ads as dealer demos. Your ads, which are more expensive than a private seller, get grouped in with the private sale ads. No special section.
A slight correction: Von Schweikert is NOT allowed to be advertised here on Audiogon anymore. They are also a local, in store purchase line and require special permission on a case by case basis for the dealer to sell outside their local area. If a dealer is running an ad for a Von Schweikert product here on Audiogon, they are in violation of their dealer agreements and will be terminated as a dealer.
It's too bad that the ads bother you guys so much. For some dealers, this is a means of advertising their business outside their local area. For those people who don't have a local dealer for that product line, this is your opportunity to find out about great dealers who can save you a few dollars and provide the products you seek.