Due to different taxation, processing fees and operating costs in different countries, the price of in-game packages, currency and items may vary from country to country.
Non-US Residents: Due to Facebook's policy, if you are making a purchase on Facebook please note that Facebook Credits have a set value of USD 0.10 (10 cents), regardless of where you purchase them.
Due to this the cost of Facebook Credits, and therefore in-game currency, will fluctuate based on your country's exchange rate with the US Dollar.