Challenger estimates that today’s online deals could cost employers $449.8 million in lost productivity! A report from the National Retail Federation cited 121 million total online shoppers, which we multiplied by 59%, the employment to population ratio. (…) According to the Bureau of Labor Statistics, average hourly earnings equal $25.20, or $6.30 for each 15 minutes of work time.

So, that comes to 71.4 million employed cyber shoppers. 71.4 million X $6.30 = $449.8 million for every 15 minutes of work time spent online shopping.