Why not, if we have enough money?. The processof buying a private island is similar to buying a house It's just the cost that is so much greater. People may wonder how many private islands are available on earth. Surprisingly, there are hundreds of them in different regions around the world and they can be found easily on the internet: lf you're looking for one but don't know anyone to ask for suggestions, remember these pointers: Besides price and location, factors you shouldn't overlook are reliable water supply, climate, accessibility, anchorage ,beaches,and, most of all, the land tenure.