Hello.

B.Tech CS is pretty much average. 
Fee: For 2012-16 batch - Approx 2.0 Lacs per annum + 1lac hostel
When opting for CS at Symbiosis Institute of Technology the only plus point will be the 'Symbi Edge' 
Life is pretty much laid back and enjoyable for an average student.

Salary Package: Though the avg package is around 4 lacs, ( Which is decent, if not good. Its hardly 8 yr old private institute. You won't get even this in most pvt colleges. Remember even big pvt institutes like VIT call 5lac package a dream package) The minimum is around 3.2lac and maximum of 2015-16 is around 24lacs. 
So if you can stand out among the crowd you can easily score a nice package. Opportunities are tremendous.

Hope this is helpful.

Good luck.