Hello .

The expense of B.tech Course varies from college to college and depends on the location of the college ( where the college is situated ).

The colleges like IIT ,NIT and other highly esteemed colleges have average tuition fees of 1.25 - 2 lakhs per year.

Whereas it's much higher (around 14 lakhs and above for the whole 4 years course ) if you take admission in Private colleges like KIIT , VIT etc.

It also depends if you are taking admission through Management qouta .

Conclusion : It's totally depend on the college you get though your rank in the respective entrance exam , or Management qouta and whether the college is government or Private .

Hope this helped !