Top ten cities
What is the Cost of Living Index?
To calculate each city's Cost of Living Index value, Expatistan starts by assigning a value of 100 to a central reference city (that happens to be Prague). Once the reference point has been established, the Price Index value of every other city in the database is calculated by comparing their cost of living to the cost of living in Prague.
Therefore, if a city has a Price Index of 134, that means that living there is 34% more expensive than living in Prague.