Private colleges generally have 3 kinds of seats -

1) Government quota seats

2) Management Quota seats

3) NRI quota seats

The fee varies for each type of seats.

NRI seats > management seats > government seats.

However in deemed universities you have two kinds of seats only - NRI and management quota

At the same time you should know that lower the marks, more the fees since you may not get admission into a desired private college as well if your score is less.