I would advise you to select your ENT Surgeon carefully using previous patient feedbacks on this app. You will require Microdebrider assisted Endoscopic Nasal Surgery which in a private ward at Bangalore in Fortis Hospital-Rajajinagar (where I operate) costs about ₹1,60,000/- all inclusive. It includes a 2-3 day hospitalisation followed by 7 days absolute bed rest. I suppose Mumbai being a more expensive city will cost you about ₹2,00,000/- in a corporate hospital. Costs will be considerably less if you opt for Local Anaesthesia ( which is significantly less comfortable) and when done in general ward or as a Daycare case( usually done in patients with no insurance cover to cut costs).