Planet Money did a story on retail arbitrage in 2015 http://www.npr.org/sections/money/2015/06/03/411777635/episode-629-buy-low-sell-prime http://www.npr.org/s

Planet Money did a story on retail arbitrage in 2015 http://www.npr.org/sections/money/2015/06/03/411777635/episode-629-buy-low-sell-prime http://www.npr.org/sections/money/2015/06/03/411777635/episo...