I have been taking aptitude classes (quantz, reasoning and verbal) for the last 12 years. In over 500 engineering classes I would have taken pre-placement preparation classes. Also, I was a full time employee of company like SMART, INNOVATIVE, VISTAMIND, ASPIRE and also a full time freelancer for TIME. I take classes for CAT, BANK EXAM, GMAT etc.
My charges would be Rs. 4000 per day of 6 hours duration.