This holiday shopping season could be challenging for retailers, according to Port Washington, NY-based NPD Group’s Holiday Survey. Sixty-nine percent of American consumers indicated they plan to spend the same amount this holiday as last year, 20% of consumers indicated they plan to spend less and only 12% plan to spend more. Most plan to “shop for value” by waiting for sales and spending more at discount retailers. On average, survey respondents plan to spend $661 this holiday season. Value, q...