Intermiles voucher on hdfc smartbuy - where and how to use?

Useless voucher ....useful if you have spare money to burn 

Because  your voucher  bought at 15% or 20% discount  is only usable for  50% of redemption  

To be clear so if you have intermiles voucher of 2500 bought @ 2000 it would be added  in intermiles  points @ 2500 points....then if you want to say buy Amazon gv via digistore you can burn 610 points for every 5000 voucher giving you 250 discount on apay gv....so you need to buy atleast  20000 vouchers to get 1000 discount  on apay gv...

The 50% applies only on travel categories....where in you would get better discounts  elsewhere..

For twid groceries like on jiomart  you can use upto 25%.....rest is your calculation....

For me it did not make any sense unless some air ticket which is short by few miles short