See these 5 private islands that are up for sale. Want to have your own island? Then check out these private islands that are currently for sale on the market.Number 5 - Trinity Island in Greece is surrounded by the Mediterranean sea. The 12 acre destination features a main house, private church, Venetian watchtower, and a beach house. All for a price of approximately $23 million.Number 4 – A 13 acre island in the Bahamas, dubbed Bonefish Cay is selling for almost $14.5 million. It comes with numerous boats, villas with eight total suites and a main lodge. Number 3 - Ailsa Craig is a 245 acre island in Scotland. It was formed by a volcanic plug and rises over 1,110 feet above the sea. On the market for about $2.4 million, the beautiful land houses a two bedroom cottage and a ruined castle. Number 2 – Scott Island, in British Columbia is another paradise up for grabs for around $3.5 million. The 5.2 acre retreat has a gorgeous main house, six outbuildings and walking trails.Number 1 – Harbor Island in Maine is on the market for nearly $4 million. The distinct island is shaped like a heart. The heavily wooded, private 25 acre property has more than 4,800 feet of shorefront land.