According to one of my friend's personal experiences, you should recognize what you want to do in life further. Whether you want to continue in a technical field or a management field. The next thing is the decent package and the prestigious company, you get your placement.
If Engineering is your choice -
If IPM is your choice -
Comparing these we can see that by the time your package reaches INR 12-13 LPA being an engineer from IIT, the salary of the IPM graduate reaches very high. So this is where the difference is being created.
Thus we can say that rather than just focusing on return on investment, look for the average package that will last for your entire life.