Recently I was thinking to change my location again, I've been long enough in Thailand so I was looking for a new home base. There is this super useful website called Numbeo where you can compare the cost of living of different countries. It's a huge database on costs and prices, contributed by users from all around the world. It shows you prices for apartment rental, utilities, transportation, groceries, restaurants and more.
If you're on a budget and looking to move abroad or spend a year traveling, this will certainly help you finding the cheapest places and avoiding the most expensive ones. Needless to say, the cheaper the country, the lower the salaries.