Price paid for Shelter Island in 1651: 1,600 pounds of sugar Highest asking price for a property on Shelter Island in 2018: $9.75 million Pounds of sugar you can buy for $9.75 million in 2018: 12,187,500   Price paid for Robins Island in 1881: $22,000 Price paid for Robins Island in 1979: $1.3 million Price…
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