Delhi Police are not the only department asking for a big amount to part with any information, I too have come across a number of instances wherein the departments ask the person seeking information thru
RTI Act to deposit a hefty fees as this is just another way of keeping one away from seeking the information.
In a recent case I was asked to pay @ Rs.9.50 per page of information sought by me from the Pay & Accounts Office (CGHS) Ministry of Health & Family Welfare, New Delhi.