Hello! Hope you are doing well. There are few colleges in chennai which offer b.tech program with an average fee of 1 lakh rupees. The list of few colleges is in the given link " https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-chennai ". There are few colleges with a fee more than 1 lakh also in the above link but there are also the universities required for you. But it would be better if you can make it to some other better colleges for b.tech. But still it is your decision. Hope this is useful to you. Good luck!