Share Add to favourite. Read on Mobile Enter Reading Mode Walmart: Keurig K-Duo Essentials Coffee Maker, Just $79.00 (Reg $99.00) Posted on October 11, 2020 by Shanmu Priya Walmart SHOP HERE WALMART Hurry Up! Price may change at any time! The K-Duo Essentials Single Serve & Carafe Coffee Maker: the perfect brewer for any occasion. This versatile brewer is the best of both worlds, using both K-Cup pods and ground coffee to brew a cup and a carafe of your favorite varieties.