If I recall correctly didn't Ewan spend a small fortune with Emblem recommioning after purchasing this particular example, including stripping the repainting the underside including replacing with new springs/antiroll bars/brake pipes etc?
So although the cars have increased in value due to market demand, in reality the increase in value from last purchase in this particular case has largely been spent already on the recommioning and upkeep I would imagine.
All benefitting the lucky new owner of course!