If financially conditions allow then I’d say it’s definitely worth it .The opportunities that one gets in Bits are much more than any other private college in india(infacts it’s better than many IITs and all the nits too).
25–30 lakhs, I’m assuming you are talking about dual degree at bits.4 year Btech can be completed within 21–22 lakhs in Bits.Bits fee increases every year by 10–15% which makes it very expensive.
If financial conditions are strong then one should never hesitate in joining tier 1 colleges like Bits.Its an investment not an expenditure (like buying a Mercedes car).80–90% of CS alumni I know here,recovered their 4 year fee at Bits in 8–12 months after graduation.The peer quality, Placements, Internship opportunities, Very Strong Alumni Network and the Bits Pilani Brand is worth every penny spent on its degree.