WASHINGTON (Reuters) - As an economist, Beth Armington, 41, knows the value of saving money for the future, and she puts money aside from every paycheck for retirement. But as a divorced mother of two a week before Christmas, she's thrilled with the sale at Hecht's department store. "Hecht's is practically giving it away," she said as she browsed the upscale store. "I can buy five different presents for my kids but spend only half as much as last year." With small children, a "huge mortgage" and a nanny to pay for, Armington echoes the sentiments of many Americans fighting...