Amazon is the best online shopping app.why because there are very concerned of there consumers.I want to share a personal experience, I have my Lenovo Vibe k5 through Amazon what I observed is
1.There is a time sense for them
2.There are going to open the product before us and there will show us and also there say, if donot like the color or if donot want this product right now or if you want to delivery on other date with out hesitation tell us
3Without transportation charges also the product will delivery soon.
4.There is a cash down process and there will be 0 percentage of cheating So, according to me this is the best online shopping app which is mainly useful for a COMMON MAN.