Hi!!!! BITS Dubai is a part of BITS Pilani but the application procedure is different. You don't get admission to BITS Dubai by taking BITSAT test and eligibility criterions are different too. I suggest you to kindly go through this link https://universe.bits-pilani.ac.in/dubai/admissionsOverview to get eveything you want for and coming to the fees AED 22,500 per semester i.e Rs.4,22,000(apprx) and hostel fees are AED 15,000 per semester which is Rs.2,80,000(apprx).

Hope that was helpful.Thank you!!