I definitely agree with the rings, but you don't buy many in a lifetime.

Less so with the cars, the vast majority of cars sold are with relatively thin margins.

And houses aren't sold by a single business, it's just the law of supply and demand.

I would add Nespresso as an example: They've definitely managed to mass-market a luxury good (outrageously expensive coffee pods)

All three are below median prices for the coastal US.

If you are in Chicago, think 6k rings, 60k cars and 600k houses.