I will tell you about the amazon. It is a good one websute. It is liked by many people. Many loves it. But also many dislikes it due their following reasons. It has it own delivery cart. It has prime system. But the price is unbelievable. It has too much price that one can not buy it. It is not assured. As flipkart. It has less delivery. It does not inclides all types of book. From buying this the seller will higher the rate of any substance as per his choice. It takes lot of time to open. It is reall averagable worst. It takes too much time to deliver the product. Go into your setting and see permission in this amzon is able to read all contacts and another thing.
I want to consider that do not download app and use it very less.