@OF To piggyback your statement
Warranty transfer. I previously worked for a very high end internationl production company. A name you would be very familiar with. Each "product" cost roughly between $80,000 and $750,000 when purchased new. I was in charge of customer service for central US and Canada. The product carried a 4 year limited warranty. I had the power to help people outside of warranty in the event of issues occuring or when something failed that was not covered by warranty. I was always much more inclined to cut a check when the individual who i was helping either bought or serviced with our network of certified dealers across the country. That's where our money came from. If you buy second hand, the manufacturer has no skin on that game. You're not really their customer. Sometimes people would complain they were a loyalist to the brand, and that they had spent upwards of $500,000 on the product but had always bought used, and didn't buy the product used from out certified dealer network. I would basically politely explain from a business prospective they weren't really my customer, and the first time they reached out to the brand they were basically asking for a handout. Usually these conversations didn't go well, but it was part of the business... a damn stressful business.
Sorry to derail but just some perspective from the business standpoint on warranty transfer after second hand private sale purchases or purchases from non certified dealers. Cheers.