The question is what are you doing with that car in addition to the cars you have. I have the same problem. At the moment I have 5 E32 750iL, out of that 2 Highline versions under reconstruction, plus a Citroen 2CV Charleston with only 1.200 km on the clock in almost 20 years.
I will reduce my car pool for sure. because I cannot drive them all.
If I drive the Citroen, people watch that car, because the car is very seldonm in Japan, less than Ferrari.
So ask yourselves: can you also drive the car? Or just buy it?
Buying is the easiest part, maintaining it.....