If you buy 10K Tata Cliq vouchers via gyftr reward multiplier, you will get 3000 Edge points (600 Base + 2400 as multiplier). These 3000 points are eq to 2400 miles. Now depending on how you redeem miles you can get value anywhere between 0.8 to 1.8 rupee per points (more if you travel business class in international sector). Even if you take value of per mile as 0.8 the value of 2400 miles is Rs.1920. Hence effective cost of 10K Tata Cliq voucher is max Rs.8000.