The median listing price in Putnam County is $397,707, which means the Willow Island home is pricey by the area's standards — but it's still much cheaper than other private islands for sale near Manhattan.
Just consider Pea and Columbia Islands on the Long Island Sound in New Rochelle. The two islands are just 30 minutes from Manhattan and are currently for sale for a collective $13 million.
Source: Zillow, Business Insider