Sony laptops, in general, are expensive. Additionally, the VAIO NW150J is not a hardy laptop. My laptop body developed a hairline crack in the base when it was less than a year old. And this was always in a laptop bag or used on a table.
Unfortunately, the warranty did not hold since it was not bought in India. The local Sony service representative advised me to use it as long as it lasts since the repair cost would cost 30% that of the laptop itself. Representatives on the phone were less receptive. My personal recommendation is an HP laptop.