Well framed. I will add though that it's not entirely indicative of how much one thinks is a lot; it can also be, as was explained to me, that for ultra wealthy people, the price, at any magnitude becomes a rounding error.

half a million for a car sounds absurd to me, but it's 0.5% of $100M. Compare that to $50k car on a ~$200k median net-worth US household.