The high end market is in a tough place. Demo'ing things in a showroom is nice but it doesn't allow you to make a good comparison using your own system. So, if you want something, you have to buy it and hope that you like it. When you do that, to ensure that you don't lose your shirt, it makes sense to get the lowest price possible. That way, if you have to resell the item, you don't lose as much. In short, the buyers are taking on the risk that the dealers used to handle. That is what the large margins were for -- assuming risk in terms of stock, demo equipment, space, etc. When the risk shifts, the margins shift too.
A perfect example is the bryston sp3. I would love to check one out in my system and see if it is really better than my Integra (for example, I didn't love my bryston dac and I sold it). This is not meant to malign Bryston products -- I own two of their amps and I love their stuff and the company philosophy. However, I have no way to conveniently assess my purchase options. Hence, I have to buy something with the burden of reselling it if it doesn't work out for me (for whatever reason). It is very tough to be a customer in this market too. There are not many dealers allowing in-home demos.
I think Audio Advisor has it right -- allow complete in-home auditions. They take risk on that, and they get financial benefit as well. I am just not sure how many people think that the premium for that service is worth it. The buy it cheap and resell it philosophy can be a better strategy for expensive items that are in high demand (sp3 for example).