And nether of those things are needed for a car to be unaffordable. It is like you don't know what a car costs that works. used prices for absolute garbage is high due to the fact most of the market can not even think of buying new cars. Less new cars means less used cars later.

A car doesn’t need working heat

yes it does, for safety reasons. I've been in scary situations with windshield fog before, I won't drive a car without a working heater