But what if that number isn’t near what anyone would actually pay for the house? Say, I live next door to my child’s school, and an elderly parent I care for.

But what if that number isn’t near what anyone would actually pay for the house? Say, I live next door to my child’s school, and an elderly parent I care for. I might not sell for anything. The “market price” has to include what people are willing to pay for the item, not just what they’re willing to sell for.