The difference in price between clothes in Singapore and New York, according to the Economist Intelligence Unit (EIU). Singapore retained its position as the world’s most expensive city, according to the EIU, which tracks living expenses in 133 cities worldwide and uses New York as a basis. Groceries were 1% more expensive in Singapore than New York, it found. The rest of the top five most expensive cities consist of Paris, Oslo, Zurich and Sydney. The world’s cheapest cities are Karachi, Bangalore, Caracas, Mumbai and Chennai, it said.