The offer isn’t available to anyone, though, but only to customers owning a Citibank credit card. Moreover, according to Samsung, the offer “is valid only for transactions done on 11th, 12th & 13th April 2014, or till stocks last whichever is earlier and is subject to change without prior notice.”
The new Galaxy S5 is expected to cost at least $848 (51,000 INR) in India at launch, so the cashback offer would allow you to pay around $125 (7,650 INR) less.
This isn’t the first time when Samsung includes cashback offers with the purchase of its products in India. It did the same with some older Galaxy models last year.
Indian customers can pre-book a Galaxy S5 right away (for $25 - 1,500 INR) at the source link below, where official details about the 15% cashback offer are listed. Only the white and black versions of the new handset are available to pre-order, but we assume that the blue and gold ones will be released shortly after April 11.
Unfortunately, at the moment Samsung doesn't seem to offer cashback promos for customers in other markets.
source: Samsung India eStore via Samsung (Twitter)