Every year, the buzz about Flipkart's Big Billion Days Sale 27 September. is completely justified. One cannot refuse to shop with such discounts, special offers, and innumerable products available at such low prices. But, smart customers understand that savings can be maximized by using a particular payment option for the purchase. In the current post, we will be covering the credit card offers and discounts that one can access during this sale in order to utilize it to the fullest.