Hi,

According to your situation, as  you said that you have awithdrawn the already alloted seat, so I am assuming that you have not given the seat acceptance fees for the same. So In that case you will have to give 16,500/- to sit for special round.

You can check all the details in the link below

https://engineering.careers360.com/articles/csab-special-round-for-nits-iiits-and-gftis

I wish you best of luck

Thank You