Is it a red flag that no one else bought it in that time frame? I would imagine dealers would prefer to cycle their showroom pianos so that they don't get too old and lose value.
Cycle? Where to?
I suspect this is just the nature of the market that pianos linger on the floor. That it didn't move, honestly, is no surprise to me. I would be concerned about how it was maintained all this time.
Is there such a thing as love at first sight with a piano? Or first audition?
I had this once -- a 1933 Steinway B that I rejected on the advice of my tech. I still regret not buying that.
Ideally, there should only
be this (love at first sight/audition). Is art or feeling something we should resign ourselves to compromising if we can afford not to?
Lastly -- and I admit, it's a bit too late for this -- your first mistake was going to the Internet for advice. None of us have to live with your decision. Make an informed decision by gathering your own data -- impressions, feelings, etc. from first-hand experience. Never rely on a salesman (conflict of interest) and don't rely only
on a tech (conflict of interest and too high a risk of objective incompetence) to make this decision for you: Their engagement with you is over as soon as your checks clear.