Ehh.. i never really calculated the cost in a monthly basis. It depends on how much u willing to spend on the child. Some people always wanna give the best for their child. To me, i willing to spend money on my child if i think it is important for them.
The expenses is higher when the child is younger. As they grow older, it will slightly reduce. They are ways to reduce the cost at the intial stage so u can use the money on other important matters.