For the uninitiated: Flipkart is AMZN of India. They are doing tonnes of sales here. FK is getting so much valuation as India does not have a big enough organised retail (roughly 5%). This means there is a generation which would move on from unorganized retail to online. And hence the astronomical valuations. FK also has some unique ideas. For instance, they launched Moto e, g and x in India as exclusive sellers. They managed to sell 1 million of those phones in last 6 months. This alone would have easily resulted in a $20-25 million rev.
Revenue normally refers to top-line or gross income. This is why I clarified with the 'net-' addition, it's probably what led to the confusion in the first place.
Flipkart nowadays anyway operates on a 'store' model for the most part so sales margin for this discussion could actually be meaningless anyway. But since they were doing an exclusive, perhaps they were directly selling, in which case it would be pertinent to the discussion.