In the past five years, the global cost of living has dropped from 85.5% to 74% — great news expats and expats-to-be, isn't it? How ever, before we cause a stir, we would like to point out that even though during 2017 the world witnessed the fastest economic growth since 2011, the cost of living is fluctuating depending on various indicators; and it's often quite unpredictable. This article looks into the ten most expensive cities for 2018, stemming from the Worldwide Cost of Living report, which has studied 133 cities and the prices of 160 products and services. Money, they say, don't bring happiness. What if, in some cities, they do?