0.25% trade fees to convert, 0.10% trade fees on other exchange the sell+ 1% premium on bitbns when trying to buy any coin with inr. You easily lose 1.3% by doing this.
Trading at that fees requires high volume, how do u expect trades to trade high volume when inr withdrawals is 1 lac per day (p2p is at almost 1% discount then spot- so no use losing 1%)