Like we said this is an interesting case because it was thought that the main reason the Lumia 520 did so well was due to its low price point. However this is only one retailer in India and might not necessarily apply to all other retailers so we might be getting ahead of ourselves here, but if this is the start of something, it looks like Nokia might find themselves with another hit in India again.
It is not completely unheard of to find certain regions in the world preferring a particular operating system. After all it was a couple of years ago where a survey was conducted where it was found that Europeans liked the Bada operating system despite it not being popular in other parts of the world.