Hi jagadeesh,

I hope so you have downloaded JOSAA app if not download it then go to CSAB website you will find there then click on to bussiness rules it is pdf download it and open you will get idea how much you need to pay .

Good luck,

I hope so you have understood.

Thankyou.

Since you haven't accepted the seat, you will come under the category of students who did not pay the acceptance fee, so you will have to pay 16500 to appear for spot round.
To know more, go through the link below-
https://engineering.careers360.com/articles/csab-special-round-for-nits-iiits-and-gftis
Good Luck!