You need 700$/month to have a decent hacker life in Banagladesh? Wow.

I am originally from a second tier city called Surat in India. I think I can have a very comfortable life in 400$. Here's the breakdown (all costs in Indian Rupees):

Monthly Rent for 1 Bedroom: Approx 4000

Internet: 2,000 (Not the fastest but hey, we are not hosting servers from the bedroom)

Food: 1,500 (50 Rupees per day (eating out) for 30 days)

Others (Gas (Petrol)/Clothes/Entertainment/Electricity etc.): 3,500 (A rough estimate)

Total: 11,000 INR, approx 250 USD, I am still left over with 150$.