Rob, I have a great many messages from Usenet/rec.music.makers.piano
about concert grands and will sift through them for you.  (This which
would be the place to look if it didn't have so much chatter about
fingering, etc.)

In the meantime, here's an interesting 2-year-old one off the top of
the pile.  I'll be in touch again.

Dan Wilson ("London", to distinguish me from the SC one)

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 Article: 31998 of rec.music.makers.piano
 From: chenl@ihgp1.ih.lucent.com (-Chen,J.L.)
 Subject: Re: Boesendorfer
 Date: 14 Aug 1997 22:31:23 GMT

If you are in the market for a high end pianos, don't shy away from
European pianos just because their high list prices.  Actually cost-wise
Boesendorfer is not necessary more expensive than Steinway.  Outside US
market, Steinway in many markets is more expensive than Boesendorfer.
For example, in UK market, take a look the concert grands official list
prices published in Keyboard Review:

 Steinway D                              67,500 pound
 Boesendorfer M290 (Imperial grand)      65,400 pound
 Bluthner 1                              60,000 pound
 Bechstein EN                            58,600 pound
 Boesendorfer M275                       54,000 pound
 Yamaha CF3S                             51,499 pound

From my understanding, the list prices in UK are quite close to the
street prices (other than US, many times list prices are just fiction).
When comparing pianos of the same size, Steinway is actually about 20%
more expensive than Boesendorfer.  Of course, outside US, you get the
Hamburg Steinway.  In US, the list prices of Boesendorfer (and all other
brands above as well) are much more expensive than Steinway.  The M290
is listed close to $150K, quite unrealistic, I will say.  But if you
are really in the market you will quickly find out the true going
prices of these European pianos are much much lower, 40% off is the
usually number I have seen.