Regarding the Audya:

10% will say "I'm getting one!"
50% will complain that it's too expensive, heavy, flimsy, no style creator, no sequencer, etc.
30% will say "it doesn't have enough modern sounds and styles in it!"
10% will say "maybe I'll get one someday".

Of the 20% who indicated that they might or definitely would purchase, 0.5% will actually do so, yielding total sales of 4 keyboards.