Answered on June 10,2018
For updating your name in marriage certificate, you need to get a notarized affidavit. It will cost you around INR 300 - 500 for notarization. You also need to make a demand draft of Rs. 100/- in favor of COMPILER, GOVERNMENT CENTRAL PRESS, BANGALORE for the charges related to name change.
In total, you will require around INR 500 to get your name updated in marriage certificate.