Being that you're in India, scratch the Nook off your list. No support for users outside the US & the reader itself devotes most of it's storage space for Nook books which you likely cannot buy being in India. It's not worth the aggravation or hassle.
Oh good god! Don't even consider buying something like that listing on eBay unless you like tossing your money away. Do you? I'd guess not. The guy is a new seller, 3 feedbacks using stock photos - RUN AWAY AS FAST AS YOU CAN!