Amazon lauched a new feature to buy / sell used products online like olx.in, quickr etc. Previously amazon start selling refurbished smartphones and this becomes a great successful. Also in india used products will will be work fine and amazon makes that opurtunity to establish new bussiness in used products. You buy or sell the used working products which will be usefull to others. Amazon is expecting more on this new feature and it also attract new users to amazon.