Amazon is one of the oldest and most reliable online shoping gaint not only in india but world wide too. Been a fan of flipkart and actually uses flipkart more frequently then amazon, but one thing I can assure you of is its relaibility and the customer support is just awsome.
Most of the cool electronic exclusive stuff like( one plus, redmi note prime, coolpad) you would like to have is on amazon.
As its logo thats goes from a to z, beleive me you will find all your stuff with huge variety and from the best seller worldwide.
And dont worry folks, if you dont like the stuff which you just buyed from amazon, you can get it refunded within 10 days with no question raised:)