Late holiday shopping rocketed up 57 percent, according to an Internet Retailer report on comScore figures. Operational improvements in e-commerce companies seem to be allowing more and later shopping to get in prior to Christmas. In the week prior to Christmas, sales grew to $2.45 billion. Across online and offline retail, sales were down almost six percent over about the same period, according to ShopperTrak figures. $13.5 billion was spent between the beginning of November and December 19, according to comScore, up more than a quarter from last year. Online shoppers spent $64.2 billion in 2004 to date, up 26 percent from last year.