Re: Flipkart now has 30days replacement Replacement Guarantee
+1 to what Dantool said. I bought Panasonic Cordless phone from Letsbuy, certain items were absent from the Box when it was delivered & battery appeared old as discharged very quickly. Wrote to Letsbuy within 2 days of delivery but they did nothing...
Ebay works well here, their FEEDACK mechanism is wonderful. Sellers usually fall in line. Great are the Online shopping sites that offer a FORUM or FEEDBACK where buyers can exchange notes.
Still better would be feedback/reviews on the Product page itself. Like Amazon & no. of other sites offer.