Although the price of Zebpay is more than that of international exchanges you should definitely consider it buying it at that price since the volatility is more in zebpay. You would have noticed that Zebpay's price is around $1000 more than that of international price but the thing which you didn;t notice is it maintains its price gap between the international market and Indian market. So eventually the profit you would make would be pretty much the same. Apart from that the services offered buy them is quite reliable and at least better than any other indian exchange. It is also safer than any other source. BTC is not yet fully legal in India and in this case I would consider zebpay to be the most secure exchange.