Hi Saurabh, the fees has recently been increased for IIT Bombay. It has a tuition fees of around 2 Lakhs per year. The total fees including the mess bills and other fees like gym and transport facilities etc. It costs to around 3.5 Lakhs per annum. Please refer to this link for more details.

http://www.iitb.ac.in/newacadhome/UGFEEAutumn2018-201902May.pdf