Amazon finally reveals how many Prime users it has

Finally, Amazon is spilling the beans on Prime membership.

The online retailer has been famously opaque about how many of its users pay for Prime, its annual subscription service. Now, in a letter to shareholders, CEO Jeff Bezos has revealed that Amazon has more than 100 million paid Prime members. Not too shabby, Jeff.

For the past 13 years, Amazon customers willing to pay $99 annually have received free two-day shipping, access to its Prime streaming library of film and TV, and other "deals and discounts," according to Amazon.

Bezos also emphasized that Prime is a global service.

"In 2017 Amazon shipped more than five billion items with Prime worldwide, and more new members joined Prime than in any previous year – both worldwide and in the U.S. Members in the U.S. now receive unlimited free two-day shipping on over 100 million different items," Bezos wrote.

Bezos shared other milestones about Marketplace, Alexa, devices, music streaming, and more — often relying on his favorite numerical stat, "tens of millions." (Which, let's be clear, could mean anything from 10 million to... 99 million).

According to the letter, 2017 was Amazon's best year for hardware sales ever.

"Customers bought tens of millions of Echo devices, and Echo Dot and Fire TV Stick with Alexa were the best-selling products across all of Amazon – across all categories and all manufacturers," Bezos wrote.

Bezos also shared details (sort of) about Amazon Music.

"Amazon Music continues to grow fast and now has tens of millions of paid customers," Bezos wrote. "Amazon Music Unlimited, our on-demand, ad-free offering, expanded to more than 30 new countries in 2017, and membership has more than doubled over the past six months."

At least we now know that tens of millions subscribe to Prime!