It was my understanding that new yachts depreciate ~20% in the first year after purchase.
But....if you keep buying loads of cars from Lamborghini, eventually you will end up on a list of people who get to put a deposit for brand new cars that haven't even been announced yet. And if you get an opportunity to do that, then you do that. Because then you get to buy cars like the Centenario, like the Reventon, like the Veneno - and you can be 100% certain that those will go only up in price regardless of what their sticker price is.