They are paying a fuc**ng 10k INR more than the normal rate. That's around 20%
Due to the recent crisis with their currency notes, Indian bitcoin markets are trading around $950 price levels, so bitcoin prices are 20% higher in India than the rest of the world markets.
That is the reason OP is discussing about arbitrage trading based on Indian markets and other markets. I guess it is not that easy as it involves fiats and dealing in fiat in India might attract more regulations from their government.