Nowadays, you can launch a startup worldwide overnight. But not all countries have the same purchasing power. A cheap product in one country can be really expensive in another one.

Offering discounts for lower index countries is a great way to make your product accessible to people all over the world.

It's a win-win situation as it allows you to attracted users who wouldn't otherwise be able to afford your product, while bringing value to people who live in areas where your usual price might be prohibitive.

You can use Robin Wieruch 's Purchasing Power Parity API or Danny Postma's ParityBar to set discounts based on where people are coming from geographically speaking.