Since cost-of-living surveys like this operate from the assumption that U.S. business people will want the same types of goods an services abroad (from brand names to speciality schooling), they often are a pooor guide for what things will cost for visitors.
Tokyo in Japan is the world’s most expensive city for expatriates; Karachi is the cheapest. Most European cities drop in the ranking; Australian and New Zealand cities surge, while London drops 7 places to rank 25.
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