Here are the best colleges in India with good NIRF ranking and comparatively low cost:

Government Colleges:

Indian Institutes of Technology (IITs): Even though IITs are too expensive, they do offer some of the best education and remarkable placement opportunities.

National Institutes of Technology (NITs): NIT offers quality engineering studies at a relatively lower cost as compared to IITs.

Central Universities: Delhi University, BHU, JNU are some of the nearest Central Universities who deliver education at relatively low costs and with a good academic program.

State Universities: These state universities in states like Tamil Nadu, Kerala, and Andhra Pradesh provide education economically and ensure good placements also.

Private Colleges:

BITS Pilani: One of the strongest institutes with excellent academic programs and placements too.

IIIT Hyderabad: One of the best institutes for computer science and engineering.

DTU (Delhi Technological University): Offers a wide variety of undergraduate programs in engineering at an affordable fee range.

Jadavpur University: This is one of the very prominent universities in Kolkata and renowned for its excellent work in the field of engineering and sciences.

Important Considerations:

As a point, NIRF ranking is a good pointer, but take other factors like specific programme, faculties, infrastructure, and placement records while making this choice.

Fee Structure: The fee structure for different programmes and courses offered by the college.

Location: Cost of staying in the location of the college chosen.

Scholarships and Financial Aid: Explore scholarship opportunities available for reducing the overall cost of education.

Since all these considerations must be paid attention to and several colleges should be researched prior to the final conclusion, it will not be difficult to find an appropriate one within budget and academic aspiration.