Hello Abhishek, if you are looking for the best B.Tech colleges but you have a low budget then colleges in West Bengal would be the best fit for you. Colleges in West Bengal like Jadavpur University, IIEST shibpur charge very less amount of fees over the full course. Jadavpur university charges somewhat around 10000 for the whole course of 4 years. Also, the studying environment is very competitive too in West Bengal. the students are very smart and must be on your toes every day so that you don't fall behind. You can get admission by qualifying west Bengal joint entrance examination(WBJEE) and securing rank under 1000.