List of Web Sites from which you can purchase Electronic Components and kits .
Here is list that may help you
http://in.element14.com/
http://www.ventor.co.in/
http://www.onlinetps.com
http://www.electroncomponents.com/
http://www.vishaworld.com/
http://in.mouser.com/
http://www.digikey.in/
http://www.rkelectro.com/
http://www.evelta.com/
http://www.componentsindia.com/
http://in.rsdelivers.com/
http://ciiva.com/
http://www.sunrom.com/
http://aplusindia.net/
http://www.discoverprojects.com/
http://www.jameco.com/
http://www.futurlec.com/
List available on http://achuwilson.wordpress.com/2012/01/30/indian-online-shops-selling-electronics-robotics-components/
http://avnetexpress.avnet.com/
http://www.ic-inventory.com/
http://robolabz.page.tl/Online-Shops.htm
http://hobby2go.com/
http://www.sjvalley.com/
http://esoulworld.com/