Imran, sensible question and one people ask too late.
The honest planning categories: accommodation plus deposit, food, daily commute, uniform and knife/tool kit, and a buffer for the fact that you won't be earning during an intensive programme. Rents around south Delhi vary widely enough that any figure we quote would mislead - price two or three specific options near the Saket campus before committing. Aditya's commute point is the one students consistently underestimate.
On fees so you can build the rest around a real number: ₹1.85L to ₹3.65L depending on track, across 4-6 months.
We can also tell you what students from outside Delhi have actually done for accommodation, including areas that work on the commute - more useful as a call than a forum post. +91 99711 27210, or come see the campus on a free demo day and scout the area while you're here.