Rolex, Ferrari, and even Corvette probably all have high prices in part because they're niche items that don't really leverage economies of scale, not as much as lower priced mainstream cars. But I take your point. Though in terms of cars, I probably point to Volvo, their excellent safety features etc., that increase price as a good comparison to the Apple Tax.
I don't disagree with your overall point but in the world of high-end watches Rolex watches _are_ mass produced and leverage economies of scale. I think the latest estimates are around 800,000 watches produced per year by Rolex.