I don't sell and my experience re the buying and selling of turned wood objects is limited to observing buyers at craft shows, art festivals, club and symposium auctions and shows, gift shops and minor galleries. My perception of what people will pay for and how much is obviously narrow and may be flawed, but I suspect I see the major kinds (not necessarily in dollars) of woodturning sales.
I know nothing of the business of high end art collectors, galleries or museums. but from my perspective, it appears that fellow turners will pay more than the public will for turnings that fit the craft/art's accepted criterion for good work. Not for the few luminaries, but a sort of reciprocal 'in-bred' support system for intermediate and advanced turners whose work is at or above the craft's standard for design and esthetic.
Is my perception false? Excepting the mundane 'rent payer' items, does your best work, whatever that may be, sell better and for a higher price to the public or to fellow turners? Granted that turner's can better appreciate good work, but I wonder for whom the lathes turn.
Turn to Safety, Arch Fortiter