The delivery mileage one sold recently within days and I imagine it was vastly more than Mark wants for this one. Buyers determine the prices at the end of the day and they are dead keen at the mo for standard low miles RS500s.
More and more race versions are coming out of the woodwork now and having large sums splashed on them to get race ready again. grids are getting bigger by the year at the Silverstone classic which also has a knock on effect.
Not that I am biased or anything