I've bought two homes with a price tag under 80k - most recently about 15 years ago (and it was a fixer upper to be sure) and sold it for about that 12 years ago. My first house I bought when I was 23. 27 years ago. I don't recall what I put down, but it was under $5k.
Which isn't to argue so much as just demonstrate that this varies wildly with location.