Testarossa?

That is a relic. This cars no demand lar. It's not going to fetch or retain good prices for long.

And if you look at it. It depreciates as much as normal euro marques in percentage. Just because the cost of the car is higher, you see a bigger lump of money going down the drain compared to something that a normal consumer can buy.

This cars are toys, not some people carrier that can be expected to retain road value after you decide to discard it.

If you have something like a limited F50 or 250GTO. Then it's a different story.