Experts See Web Sales Leveling Off After Quick Growth by Mark Friedman Posted 3/3/2014 12:00 am Updated 11 months ago From basically zero 20 years ago, online sales have already taken 6 percent of all U.S. retail sales. By 2017, that share is expected to jump to 10 percent. But then what? Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.