[skissane]

If we are talking about Daeseong-dong, Wikipedia says “Only individuals who lived in the village before the Korean War, or are descendants of those who did, are allowed to move to the village”

So the market of potential buyers is quite limited. (Unless they allow absentee landlords-i.e. you can buy this house, it is illegal for you to live in it, but you can legally rent it to someone who can legally live in it.)

Although I imagine “former residents and their descendants” may be a much larger group of people than the current population. Not sure how many might want to move back to their (great) grandparents village though