Online retail sales in March totaled $8.78 billion, up 37 percent from the $6.42 billion in sales during March 2005, reports Internet Retailer, citing figures from comScore, which is no longer reporting weekly online sales numbers. Online travel sales in March reached $6.0 billion, an increase of 12 percent compared with March 2005. comScore will henceforth be reporting online sales numbers monthly, with a three-week lag.