It is worth it if you can get it shipped to the US to someone who is visiting. A couple of my friends have the sheeva plug and run it as a NAS/router/gateway/dns for the home network. It is pretty nifty. More computing power than you would imagine from such a low power device.
For a NAS, you could try this: http://www.seagate .com/www/en-us/products/network_storage/freeagent_dockstar/?cmpid=ppc-_-freeagentdockstar-_-y-_-us-_-seagate_DockStar-_-a&SR=sr3_172862990_yh#tTabContentOverview
Which is 2.6K INR, but without any drive attached. Will have to check on the hackability of the device.
Surya