I don't know about that. Look at the Viper and the Prowler. Both were/are very high priced, unique vehicles that appeal to a very limited group of buyers. The Prowler was an especially perplexing car, made with "knock-out" hot rod looks, but a very low end powerplant. It would appear that they sold on looks only despite their high price and questionable marketability. BUT, a lot of folks (me included) would still love to have one, especially in one of the more radical colors they offered. Maybe the XF's were overpriced, but with their good looks and Mercedes underpinnings, I'm surprised that they did not sell better.