I almost admire the entrepreneurial spirit of the moon-sellers.
There is a worthwhile lesson here in regard to real estate investment, believe it or not, and that is that ownership of land is only at the permission of the government. Our property law comes from the old English system of land grants from the king. You could only own what the king gave you. Today, property law is still controlled by this principle. You can only own land for which you pay the taxes, and even then if they are building a highway and want your property, then that is just a bad day for you.
If you buy land in another country, your title is only as good as the willingness of the government in power at the moment to eject trespassers and honor your land deed. We take government stability for granted in the US, but as soon as you invest in a lesser-developed country, it becomes very important. A coup d'etat is not that uncommon in some countries, and if the new government decides to nationalize all property owned by foreigners, then too bad for the foreign investors. Even absent a coup, sometimes the government still screws foreigners. It has happened to some older people in California who bought beachfront property in mexico for what seemed like a great price. Then the mexican government refused to honor the land sales and the investors lost their money.