Hi everyone,

my girlfriend is in her final phase of completing here diploma thesis
for her industrial-design-degree.

She has designed an innovative stagepiano. To complete her papers,
she would also like to include a calculation for approximate manufacturing-
costs. As those are highly dependend on the number of units to be
manufactured (keybed, casting of plastic materials, controllers, electronics
etc.), she was looking to find some numbers on sales for popular stagepianos
on the web.

The only information we could really find is sales-figures for stuff like
the Yamaha DX7, but no information at all for stage-pianos.

So I was wondering if anyone around here has a hint on such figures...

Best regards,