Hello Aspirant,

All the students have to pay the fees of each and every semester irrespective of their AIR
However their are various scholarships available at the IIT's which they can avail
Another option is education loan (scholar loan) available at the IIT's which you can avail without any security
Therefore money cannot be a barrier for a sincere and hard working student studying at any of the IIT (old or new)
Hope this helps