Dominica has the cheapest Caribbean passport program at the moment. You can gain a passport through a non-refundable contribution to the government fund of $100,000 or purchase of property worth $200,000. As with St. Kitts, there is no minimum residency requirement. A Dominica passport allows you to travel visa free to 119 countries and territories including the UK and Europe. A second passport from Dominica will cost a family of four (applicant, spouse and two children under 18-years-old) about $200,000, plus fees, which comes to a total cost in the realm of $350,000.