Hello,
SC/ST students have full fee waiver at IIT's. But they have to pay the mess and hostel rent. But for some even that is waivered.
On an ave the total fee for 4 yrs comes out as 1.5-2.5 lac, changes according to colleges.
In specific about iit Indore, please go through the attached official link
https://academic.iiti.ac.in/fee/FEES%20NOTICE%2019-20.pdf
Hope it helped
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