$40 million – Motu Tane, Bora Bora, French Polynesia

Essentially not a true addition to the list, as Motu Tane is technically only available for rent these days. It used to be on sale for $40 million; however, you and your friends can now spend copious amounts of money to be able to have your own private island for a minimum of three days. Their rates start at $30,000 per night for the first 8 people, but then increase from there. With just one resort (consisting of a multitude of bungalows equipped with the latest in comfort technology: plasma TVs, sunken lava bathtubs, exquisite dining facilities) that is rented to only one group of people at any particular time, the luxurious island is the ideal place for privacy.