GOODNESS
According to me Amazon's Services are best here your money is very secure secured and in any case you get your refund also the cashback according to time.
Also they talk to the customers very innocently and resolve all the queries and give you the best customer service which I can say a sign of good company
On the other hand it have a lot to BADNESS too
First - It's mobile app doesn't Act correspondingly, It have bugs.
Second - It's packaging is very poor many times they sent me wrong products
Third - Courier agents or not a good sometimes the demand for more money and sometimes they don't give you the product. Also they even do not verify you that it's you, they don't take your sign as well which is like compulsory.