I read with interest the article by Patrick Handscombe back in about
2004 regarding the 19 Model B grands delivered to Aeolian by Steinway.
Patrick says that of these 19, six were unsold and sent back to Steinway.
Six are extant, of which one is now in the USA, and one is an art case.

I wonder if any more has been added to this in the in the intervening
13 years?  Also how much would they have cost in the 1920s?

In comparison to Model O Duo-Art grands, which I understand cost just
over 500 GBP, how many Model O grands were produced or sold and can
anyone hazard a guess at how many are still around?

Brian Chesters