Hello, fees for every department is same. There is no difference in fees as per branch.
Fees differ according to the selection criteria or if you have take tution fee wavier.
That is confession given to students.
Basically a 4 year engineering fee structure  will cost with in 10 lakhs.
It differs in colleges but it will come with in this.
There are colleges which cost around 5 lakhs and some costs 8 lakhs even.
For that you have to go through fee structure the college you want to join.
There is no bias in fees for branch
Hope it helped!