Flipkart selling Flipkart Smartbuy Headphones from Rs.299 + 10% Cashback. Make cart value above 500 to avoid shipping Rs. 40 or subscribe for Flipkart First membership at Rs. 500 for 1 year to get free shipping. Flipkart SmartBuy products promise best-in-class features, assured quality and prices you'll love, so that you get the best value for your money and a superior experience. Every time.