The estimated fees for management quota seats in Maharaja Agrasen Institute of Management Studies in Delhi for a BJMC are around INR 10-12 Lakhs. Note that this is just an estimate, not the specific amount that is required. The required fees vary each year depending on the competition and other factors.
No one can really tell you about the precise cost of the course. But a little bit of knowing how the system operates, I can help you with the question.
Your 12th percentage will be considered firstly. If you have scored well then an advantage will be there.
As B.Tech is a famous course and it cost around 4.69 lakhs for a 4 year course. If this is the case with BJMC, you can think of a closer figure. Also, do not try to obtain admissions via agents as a suggestion.
If you are so eager to obtain admission and have no other option, then the Management quota is one option, but it is not recommended to go for, especially for college like this.