should I take admission in IBS Mumbai in terms of ROI, Honest reviews please? highly appreciable

It would be your call.But I would prefer to connect with an alumini of college to know about actual placements,faculty,etc.

you may then, choice is yours.

What If i am expecting package of 9-10 lac ?

if you really want to take admission this year, you may go ahead. But if you think you can give cat another try, you may not. frankly speaking, you should consider the aforementioned rather than settling for a tier-3 college. anyway, do what you think is best for you. good luck!