I had the opposite experience with my 10-year-old Model S. Most parts could only come from Tesla, including the Bilstein struts (a part number Bilstein refuses

I had the opposite experience with my 10-year-old Model S. Most parts could only come from Tesla, including the Bilstein struts (a part number Bilstein refuses to sell to anyone but Tesla). $900 per corner. USB port between the console? $400. I found a used one on eBay, fortunately. When the wheel rotation sensor receiver went bad, it cost $2500 for them to install and reprogram the replacement, because they "upgraded" to a different mfr. When that one started to go bad (water ingress, which wasn't cured by the new part), I sold the car and said good riddance.