How many gold medals won by India in 2010 Commonwealth Games ?

you can start chess at any age.

if a single student than fee is 3000 rs

The first thing is a way of teaching. Then what they are teaching. Experience is also essential. But in my opinion, to judge a good chess coach by rating is not suitable if the student is less than an 1800 FIDE rating.

You can learn chess from coaches who are willing to take classes and I am one of them who takes classes at Beginner levels

Depends on interest and discipline. Just join a club with coaching and play regularly. You should be a very good player within a couple of years. Expertise in this field can only be achieved by competing...