As a high mileage Aero 8 owner (and seller), I think Brian may be the best to comment on whether Morgan dealers believe 12,500 miles or more effect the depreciated value of the car. My guess is they, like many other brand dealers, would mark the value of the car down when compared to a car with 6,000 miles.
Like you said Simon, it is the perception of 'high mileage' that drives the depreciation as an Aero must be more than capable of doing 100k miles without any major running-gear issues.
However, having sold my two previous Aero's at 15,500 miles and 14,500 miles, both mileages being done in fairly short periods of ownership, there is little doubt that 'Shooter' will take a pretty hard hit on depreciation with 20,000 miles on a circa 2-year old Aero 8. I am not saying that this is right, but I am sure that will be the reality.
Maybe now that Cereal has studied the topic in depth, and has a formula reflecting his findings, he can give Shooter an approximate value of his car today, if he lets him have the current mileage. From this it shoyld be possible to extrapolate the value at this time next year with 20,000 miles on it.
