Hello gyes I have bought so many goods from Amazon india and I am writing my openion on it.
customer service of amazon is very good when ever I face any problems regarding any order of mine then I call customer care and they solve problems very fast. and they provide very easy way to reach to them.
product quality:-so product quality of amazon is awesome because I have bought many product from amazon and all the products are good enough.
delivery timeliness is good they delivers product most probably before delivery time.so many time is have got my order before delivery time.
app & websites work very well even I have low internet connection website and apps open smoothly.
every things is reliable of amazon according to me because till now they not cheated me.