You can live in almost any city in India for less than 1k USD per month.
In Bangalore (Tier-1 City), rent for a 1-bed-hall-kitchen apartment will be around 200 USD. Add 10 USD per month for high speed internet. Another 100 USD per month for a dedicated maid and cook. Add 200 USD for all kind of grocery. That will be around 500 USD per month of living expenses.
You can live in Varkala/Goa (if you love beaches) and Dharmshala/Shimla (if you love mountains) for even less.
You can live in Varkala/Goa (if you love beaches) and Dharmshala/Shimla (if you love mountains) for even less.