Since 1970 UBS publishes comparisons of global prices and wages. The report is based on surveys in more than 70 cities and includes rankings of purchasing power, living standards, wages, and many more. E.g. Oslo, Zurich, and Tokyo are the most expensive cities, Delhi is the one with the lowest living costs. The purchasing power is demonstrated with practical examples, e.g. in Oslo an average wage-earner has to work 36 hours to buy an iPhone, in Delhi 370 hours.
The report facilitates the selection of the right place to establish centralized hubs in multinational companies. The current issue covers the year 2012 and is definitively a recommended read for global decision makers.
Link: UBS Prices and Earnings