There are now a couple of stores brewing around from where you can buy the Raspberry Pi online in India. Many of these stores also stock getting started kits and other accessories.
Since, I’m based out of Hyderabad, I’d like to recommend PotentialLabs for buying Raspberry Pi if you’re based in Andhra Pradesh. Buy from them at http://potentiallabs.com/cart. They ship same day or you can also pick up from their store.
The other stores include:
Simple Labs – http://simplelabs.co.in
Explore Labs – http://www.explorelabs.com
TenetTech – http://www.tenettech.com/
There are tonnes of other stores, but I’ve had a nice experience with the above ones.