one store or two?

Hi, I have to create a book store which will have different prices for books in India and outside India. I plan to use Marketpress. Can the pros here tell me what would be the right thing to do amongst these:

1. open two different stores, one with INR prices and another with USD prices and redirect customers to the right store using ip location.

2. Or can Marketpress be used to create one store which shows different prices depending upon the location of the customer?