HI

If you register through IDP, the registration fee will be around INR12100.

It is mandatory to have your passport while applying and appearing in the IELTS.

All the best

https://www.britishcouncil.in/exam/ielts/registration

The registration fee for IELTS test administered till 31 March 2018 is INR 12,100 and the registration fee for IELTS test administered after 01 April 2018 is INR 12,650

i have also attached the link above go to the above website you will have no problem ahead