The Cost of Living in Jeju Island is average. A single person costs: $1,085 per month. A family costs: $2,258 per month. A single traveler costs: $1,777 per month. Monthly rent costs: $431 per month. Coffee costs: $2.02. Jeju Island is 72% cheaper than New York City. Breakdown of prices in Jeju Island, South Korea for housing, food, transportation, going out for November 2019. Explore cost of living, weather and travel information for 7 other cities in South Korea on Nomad List.