Which city in the world is the most expensive for a cup of coffee

2.47 Expenditure in £GBP Luanda London 2.70 1 Cup of Coffee, including service. Sao Paulo 1.38 Source: Mercer Paris 3.35 Rome 2.26 Amsterdam 2.51 Berlin 3.35 Athens 3.77 Brussels 2.76 Madrid 2.68 Shanghai 4.52 Hong Kong 4.33 Singapore 3.28 Tokyo 5.25 Beijing 4.93 Sydney 3.39 New York 2.79 Buenos Aires 2.40 Johannesburg 1.98 Vancouver 2.63 Moscow 5.30