As holiday shoppers return items purchased during Black Friday and Cyber Monday online shopping sprees, more U.S. retailers could tell them to keep items that cost more to ship back than they are worth. This year, 59% retailers offer so-called "returnless" or "keep it" policies for unwanted products whose returns costs exceed their value, according to returns services firm goTRG, which surveyed 500 executives at 21 major retailers, including Walmart and Amazon.com. Last year, 500 retail executives said 26% of companies had such policies, said goTRG CEO Sender Shamiss, who...