Well now, I never said "cheap" parts, did I? A quick search for parts for a Porsche 928 and I can see dozens of suppliers. Brake rotors ranging from $45-$150 (cdn). And there is a healthy used parts community for Porsche, BMW lovers. The simplicity of the M3 models and older BMW models keep them popular but the owners of newer models I know aren't overly happy with their after warranty purchases. What's the difference between a Rotor for a 928 or Quattroporte? About 6x the price. People buy cars and when they can't afford to fix them, sell them cheaply or let them languish, Porsche, Ferrari or otherwise. That tarnishes a reputation. Sometimes, a car becomes popular. My son and I were looking for decent RX7 models (FC) when he turned 16. We had a few to choose from; running models, static models, at least one terrarium, as they were not overly expensive, generally unwanted, but all needed something. Now, they have gone up considerably to the point where a beat up '79 costs more than it did new. The convertibles are the exception. Ferrari's are a rare animal and have their own biosphere. I recall looking for a Mondial, around 20 years back. They were $25-30,000 cdn and not well sought after. Today, the same cars sell for between 45-70k usd. I can find a dozen oil filters under $20. Find me a Maserati Quattroporte filter under $20. What is the difference between a $20 filter for a Mondial and a $80 filter for a Quattroporte? $60. Of course, resale values depend on many items and keeping a car "original" keeps the maintenance cost up considerably, but unless the Maserati cars are exceptionally poor quality, there is no logical reason for poor values except pumped-up original prices that deflate after the warranty period due to excessive parts and maintenance costs. But they are still the nicest-looking used cars on the road (imo).