Amazon is not just in India but globally successful. Here are the few points you need to know about Amazon.in in India:
Pros:
You can find almost anything here. From a cap for hot day to leather shoe for business.
Anyone can become a seller here and does not charge you to list your item.
Special feature called Amazon Prime is very good. It delivers your item so fast than other sites.
Customer service is also good.
Prime delivery time is really fantastic.
Cons:
As anyone can become a seller, quality of product is compromised. Some seller sells good quality but not every seller.
As the price of items are pretty cheap its not surprise to doubt the quality.
Fake brand items are also sold here, description will be NIKE but when you get the item it will be unknown brand with NIKE sticker.
It is all about the seller and the price. Buy from good seller to ensure good quality product and price tells something you should expect to get.