Housing  for 4  (a double bed room) =  8000

Monthly expenses  =   3500 (for an indian family)

Medical  for 4 =        350 average (if you go for insurance)

School for one kid only =   1250 (indian school fee + etc for kid )

Visa for all (pro rata basis for a month) =    250

Air ticket ( pro rata basis for a month)   to any destination in India =  750

Savings can be 8250 per month