Used or new???? Amazon sells both.... you need to check what you're getting....
And junglee, as all indian stores is going to first try and make a monkey out of you..... first time buyers especially ones who feel that .com is purer than local.... DO get taken for a jolly ride.
I can vouch for both these e-retailers, prime and tech.... since I must've bought over 500K worth of PC parts from them in the past 4 years.... and believe me, I never had a complain.... prices, on the other hand do work out a little more expensive from the local store, but, that the cost of not having to go shop to shop and haggle with these guys and stand in the heat.
The price of convenience is really measly.