Amazon is giving Rs.50 off on topping gift card balance with Rs.1000. You just have to go to the 'Top-up Your Balance' page and choose Rs.1000 denomination. Then while you are at the 'Payment Method' page or 'Review Your Order' page, enter the promo code: TOP50OFF and you will have to just pay Rs.950. That's a discount of 5% on Amazon.
Make sure you only top up your Amazon gift card balance since the offer is not valid on buying Amazon Gift card. The offer is valid only from 4th August 2016 to 7th August 2016.
If you need to buy something from Amazon, this is an awesome offer. Seriously I previously procrastinated on such offers thinking I didn't need to buy anything. But Amazon is a great place to buy things for daily needs too. On 1st and 2nd of every month, Amazon comes up with Super Value Day where you can buy anything for your daily needs.
Also with Amazon Prime, now you can buy low priced items with free shipping.
Summary: Go to this page, choose Rs.1000 denomination and apply TOP50OFF.