I would strongly recommend that you don't buy that smile stuff. Spend a little extra and take something that is genuinely good and has a resale value. Here you may land up losing your money. What grinning_devil says is right. There are cheap stuff available if you search for them.
In Mumbai at Lamington Road, there is a person called Jeetubhai Joone Computerwale

You can find him in a building next to Lamington Road Polics Station. He would be a little more reliable I guess. But even for a second hand piece, take a known and successful brand.