I agree with the sentiment here but its the same for all old cars, look at the Ford scene the prices for parts are absolutely biblical but it seems to only drive the car prices even further up.
I think most Morgan's are quite undervalued (its a brand thing I guess) and will only appreciate in time as the brand is promoted more via Invest Industrial.
Interestingly most non-Morgan dealers appear to price them higher and sell them eventually, for whatever reason Morgan dealers do seem to price/sell lower on certain models., Then again if they can, and the owners are willing to sell its better business for them - the knock on effect is the brand value Morgan are trying to take upmarket but at this stage they are not at odds with each other.