Looking at the real estate listings for my area, the most expensive home for sale is $1M; and it is a beautiful mansion. I couldn't imagine paying $1M for just a nice home.
Looking at my area, the cheapest house I'd actually consider buying in an area I'd actually want to live, is north of $600K. House prices having nothing to do with the building, and everything to do with the location. It's (relatively) easy to make an ugly house beautiful.