How the dollar-store industry overcharges cash-strapped customers while promising low prices

A Guardian investigation reveals Dollar General and Family Dollar stores often fail to honor their shelf prices – charging more at checkout for everything from frying pans to Frosted FlakesOn a cloudy winter day, a state government inspector named Ryan Coffield walked into a Family Dollar store in Windsor, North Carolina, carrying a scanner gun and a laptop.Inside the store, which sits along a three-lane road in a county of peanut growers and poultry workers, Coffield scanned 300 items and