According to a New York Times article, shoppers from New York City have played a game of "retail arbitrage" by shopping at malls in Northern New Jersey, a state where there is no tax on clothing and shoes. Even after accounting for transactions costs, shoppers could still save money on their clothing and footwear purchases. Source: Ken Belson and Nate Schweber, "Sales Tax Cut in City May Dim Allure of Stores Across Hudson," New York Times, January 18, 2007. Is the term "arbitrage" correctly used here?