Purchasing power parity pricing refers to sellers maintaining different prices for the same product in different countries, so the product costs more where purchasing power is higher and less where it is lower. The point is to increase sales by giving more people in lower income countries the opportunity to buy. (I may be oversimplifying.)
Personally, such pricing would make it easier for me keep subscribing to Sync and not have to think about it twice (or three times, or four).