letsbuy.com is one of the top ranked online shopping sites for india and users buy most of their products from this online site.
There are many online shopping sites available on search engine, My favourite website are under this sentence: 1. Olx.in 2. Flipkart 3. ebay.in
flipkart is the best in terms of delivery and quality of products, ebay sells lots of duplicate items, tradus is good but now they also started charging shipping charges, myntra is also good, yebhi's sells old and rejected items
flipkart.com . I would definitely recommend myntra.com , jabong.com and snapdeal.com. Amazon.in is cool for books, however, it is adding new stuff very soon.
In my opinion, Flipkart is a good one. There are a lot of local small e-commerce sites also which are serving some regions of India like ABCPune.com for Academic Books, Office needs for Stationery etc. Thanks, Jyoti (www.abcpune.com)