Yes, BOSE is like Rolex... it is a status symbol... but that is a criteria for some people as a claim to the best and as such would be reflexed in the resell value. If the ratio is low, then obvious the Rolex isnt respected any more.
And supply/demand is exactly why this method of speaker quality determination is valid. The only issue is that new speakers will be higher ratios (due to artifical low supply because of people wanting Used 1 month old speakers), so the manufacture date should also be included.
As far as type of speakers, be it satalites etc, that is also part of value. And though I hate them, and most people on this site totally oppose them, many people just wont budge on speaker size. So if your dead set on buying a satalite system, which ones should we recommend as the cream of the crop?
Well this model will help us make a determination, even though we can rant and rave and recommend and plead for a change in heart.