With the marks you have obtained in the NEET the admission in the medical or dental institute is very difficult for you. Now the management quota seats are filled as per the institute policy through the counselling. The fee structure for the management quota seats is highly unpredictable and variable and one cannot give the accurate figure and also it depends upon the institute to charge the fees for management quota seats. It may be in lakhs or in crores also. But I would suggest you that you do not go into the medical courses but there are other carrer options for you to get into and they have the bright future too. So instead of westing money in the management quota seats better you go for the other good courses and the link for the such carrer options is given below for more information.

https://medicine.careers360.com/articles/what-if-you-dont-get-mbbs-seat-know-bright-options-in-allied-health-sciences