Best Buy electronics retail chain plans to close 50 big box stores in 2012 and open 100 mobile small format, stand alone stores. This is part of a strategy to reduce costs by $800 million by fiscal 2015. Total sales at stores open at least 14 months declined 2.4%. Best Buy competes with online retailers like Amazon.com and discounters such as WalMart. Best Buy's response was to increase online and mobile options for purchases and discounting efforts of its own. This has put pressure on its profits, with a loss in fiscal fourth quarter ending March 3, 2012, of $1.7 billion, which also reflects restructuring charges.