U.S. online retail sales on Cyber Monday were up 19.4 percent over the same period last year, with the average order up from $180.03 to $194.89 for an increase of 8.3 percent, according to a new report from IBM's Coremetrics. Compared to Black Friday, Cyber Monday online sales were up 31.1 percent with the average order up from $190.80 to $194.89 for an increase of 2.1 percent.