The house is ridiculously priced, but you're way off about land.
Let's be honest, this doesn't need much land. But you can still easily buy land for $2,000/acre and less. I paid 60k for 40 acres, and that's if I value the EIGHT buildings at $0 (about 6 years ago).
Interestingly, some locals have sold property recently at exorbitant rates by marketing in NYC and similar markets. I think people in the city just have no idea.
There's a whole country out here.