Airline discount advertising misleading

If you notice all major websites like http://www.yatra.com, http://www.cleartrip.com, etc have posted major offers on domestic and international flights. The offer read something like "upto 50% cash back on domestic flights" / "50% cash back with HDFC Bank credit cards"

If you carefully read terms and conditions it clearly states:

1) Yatra 

Cash Back on SpiceJet
 Get 50% of base or Rs 250 (whichever is lower) Cash Back on tickets booked 30 days or more in advance.
 Get 15% of base or Rs 150 (whichever is lower) Cash Back on tickets booked less than 30 days in advance.

 

Cash Back on Kingfisher Red
 Get 50% of base or Rs 200 (whichever is lower) Cash Back on tickets booked 30 days or more in advance.
 Get 15% of base or Rs 100 (whichever is lower) Cash Back on tickets booked less than 30 days in advance.

So its max of Rs 250, even your base fair be Rs2000     

2) Cleartrip :Offer Details for Domestic Flights       "Book 4 tickets or more in a single booking (2 round trips or 4 one-way tickets) and get 50% cash back on the base fare or Rs 2,500 (whichever is less)."   

80% of time the offer would not be available   which is basically if you buy 4 tickets   4*(1250 base+ 2500 tax)= 15000 you get 2500 off which is 50%. This the max benefit you can get at minimum cost. Ticket costing anything above or below your discount will only be 10%-20%     As for a layman, in above cases if you include tax then max discount you get is 15%     

3) Spice jet offer "ticket pe ticket offer" In this case once you book a ticket you get a coupon code, which have to activate. And the coupon will be valid to book tickets only after 4 days. By chance if you didnt activate/check then you are doomed.  

So be aware and always read terms and conditions.