South Dakota is one of the few states where low priced land can still be acquired. The lowest priced land in South Dakota would automatically be among the lowest priced land in the entire United States of America also...
There are many advantages in acquiring and owning the lowest priced land as opposed to the highest priced land. The lowest priced land usually doesn't go very much lower in price while the highest priced land can, during economical recessions, substantially depreciate in value.