Technology, speed, efficiency, state of the art supply-chain system and all that is fine. When it comes to price advantage, that's a relative term to speak. Initially when Walmart targets a store to kill, they indulge in cut-throat pricing and get the initial draw of customers. Never again in your life time will you see those kind of prices. Get ready for the evil empire. I really empathize with the millions of mom and pop stores in India.