Online retail giant Amazon has been inching toward having a physical retail presence in the U.S. and UK through the installation of lockers at grocery stores, drug stores and other retail locations, like 7-Eleven, Staples, Walgreens and RadioShack. Amazon users can place orders online that are delivered to the lockers, avoiding hassles such as missed deliveries. But instead of setting up lockers at various random locations, Amazon could establish a broad physical presence for dirt cheap with one bold move: It could buy RadioShack. The U.S. electronics retailer has lost more than 80% of its value in three years and is now worth just $325 million on the market. RadioShack has more than 4,400 stores in the U.S. alone and 90% of them are within a two mile-radius of city and town centers.