Cardiac Surgeon are one of the most important sets of surgeons all over the world. As per the surveyors, the average cost for the Valve Replacement surgery is approximately Rs  452838 to Rs. 598914 . This is mostly the package of the whole surgery. So its expected that the doctor earns around Rs. 50-60k for the surgery. Although such surgeries aren't done by Fresher surgeons but its done by most of the experienced surgeons.

I hope this answer helps. All the very best for your future endeavors!