I've reached the same conclusion. The going rate for RB-1's and 2's seems to be about $450 to $900, which is too much to pay for a 12-year-old (or more) bike with so-so tubing. To be fair, the same can be said for a lot of vintage bikes -- strip the mystique and all you have is a heavy frame with funky components.
I think where Bridgestone really excelled was in their catalogs -- I have a copy from 1994 and it is beautifully designed and full of useful articles.
I've got no problem if you think the bikes are overpriced for what they are (that may be a fair assessment by the way) and I completely agree that the catalogs (I have the 92, 93, and 94) were excellent. But I'll disagree that the tubing on the RB-1 was so-so. The tubing changed over the years but it was always a seamless, double butted, chrome-moly frame with lugs. In fact the catalogs tell you exactly what kind of tubing was used, how it was made, and why it was good stuff.