It is not a platform to discuss cost of the operation and all. It depends upon the individual clinics, experience of the Dr and the service provided.
It can be operated for free in Government set up and in Dental Colleges. In any sound clinical set up, the charges for the operation can vary from Rs 3500 to Rs 10,000 would be my guess.
Next Steps
Please visit an Oral and Maxillofacial Surgeon and you can get your treatment plan and as well your estimated cost. Then you can also take a second opinion from another specialist and you can decide, if not go to another one if you still cannot make your mind up.
Health Tips
After the surgery please submit the tissue for a histopathological examination to get a confirmation of the diagnosis. Best of luck..