One of the joys of this forum is that when you get to sell a car you have a pretty comprehensively documented history of and work done, the care and taken and the pride invested into Stina's car is obvious to see. Anyone buying it would be getting a bargain. You can spend that much almost unnoticed over years of ownership on any classic.
Still, I follow P6s on carandclassic and it certainly isn't quick and easy to sell a P6 at the upper end of the scale. I'm guessing most of these get sold on through the clubs rather than Joe/Josephine public.
On the plus side - plenty of time to reconsider...