That is a broad brush to draw. Different countries, different auction commissions etc. Private sales are still happening way higher than those figures because the vendor and buyer are on the same page. Start adding 20% commission on the front and back of prices then you will always have hesitation.December 2017 Shadow £119,100 in London auction, same one sold again last year approx £60,000 2021 2 Shadows c£51000 each. We will know more after the next 2 or 3 auctions but looks like Rapide's now around £30,000 and Shadows £48000 ?