Amazon is one of the largest e-commerce site. One of the widest shopping network having almost all the products in their inventory. Its pretty easy to buy things from amazon. it has very user friendly interface which make it easy for anyone to access it through mobile application or through its web version. Returning and buying products are very easy. Moreover it is quite secure network. The products are usually delivered in 2 or 3 days and if you are prime members they offers lot of good services.