Going by the context of your content, I guess you are from India. Pardon me if I am wrong.
1. Salary: you should be able to get 30000 INR quite easily since you have done your MBA in 2009. But the catch is you need to have real time experience.
2. Time to family: this purely depends on the company where you are joining and the work policies they have. If you are put into a project which has tight deadlines, work hours might get extended. Kindly speak to HR clearly at the time of interview and express your concerns.
3. Maternity leave: Again depends on company policies. Check with HR at the time of Interview.
Regarding huge investments as you had given, kindly choose the correct training partner who would give real time training and assist you in getting a suitable job. As a lecturer you communication skills should not be a problem. And you have some gap after your education.