Is it worth doing integrated programme of BBA+MBA from NIIT University, Delhi?

Annual fee at NIIT University depends on the course.

You can the list of courses with their annual fee mentioned below:

NIIT University programmes range from the UG to doctoral levels in Computer Science & Engineering,   Geographical Information Systems, Electronics & Communication, Biotechnology, Educational Technology & Management Sciences. At the UG level, the university gives BTech programmes to student

Yes, The NIIT University has signed several collaboration agreements such as NIIT University (NU) & the UINDY entered in a partnership or a collaboration agreement that increases the research & educational opportunities for faculty & students. 

NIIT University is located at the UNIVERSITY CAMPUS: 

NIIT University, NH-8, Delhi-Jaipur Highway, Neemrana, District Alwar (Rajasthan). Students can easily reach the university through bus or any other mode of transportation. 

Candidates who have passed Class 10 and Class 12 with at least 55% aggregate can apply for BTech at NIIT University. Aspirants must have documents to prove their eligibility. Candidates should also have score in JEE Main, CUET and other accepted entrance exams.