Amazon adds 3 million members in a single week

Amazon (NASDAQ:AMZN) added 3 million Prime members Christmas week alone in what the company termed "milestone growth."

Shoppers joined Prime in droves the third week of December, ostensibly to take advantage of its delivery services—free two-day shipping, same-day delivery and even two-hour delivery in 20 markets.

It was also a record-breaking season for Amazon-branded products, and sales of Amazon devices, including Fire and Echo, were twice that of last year.

Mobile commerce surged at Amazon, with nearly 70 percent of shopping done on a mobile device this season—33 electronic items were purchased per second on mobile devices on Cyber Monday alone.

"This was another great holiday season to be a Prime member, and we welcomed 3 million new members in the third week of December alone," said CEO Jeff Bezos. "Over 200 million more items shipped for free with Prime this holiday, and members doubled their viewing hours of Prime Video compared to last year with the Amazon Original Series The Man in the High Castle leading the way as the most watched TV season ever on Prime Video."

Prior to the holiday season, roughly 25 percent of U.S. households were currently Prime members and by 2020 that number will grow to 50 percent, according to Macquarie Research, which estimates that Amazon is responsible for half of all retail sales growth.

For more:
-See this Amazon press release

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