^^^^^
Rs800 discount for booking before 7 days of travel?? Very useful for business people, but not worth to wait for if you have more days as the last week fare will be too much high, imho...
Further afaik, ClearTrip gives Rs500 discount to users for first TWO transactions done using their ONE-CLICK BOOKING (after adding CC details in their database)... I have used them both and you can try too as discount is applicable even if base-fare less than Rs500..