Hey Akash! for a budget traveller it takes around Rs. 800-1000 a day. Main price depends upon your flights from Bangalore to Bali. Choose the airlines with best rates. Also, you can minimize your budget in terms of stay, food and local exploration. Checkout this package for Bali: https://www.tripoto.com/tour-packages/bali-nusa-pedina-week-getaway Also, you can check some budgeted stays in Bali here: https://www.tripoto.com/hotels