Amazon Has Over 100 Million Prime Subscribers CEO Jeff Bezos made the announcement Wednesday in a letter to shareholders. Prime added more members in 2017 than any other year, One of the key drivers behind the increase in subscribers is Amazon Music, which Bezos said boasts “tens of millions of paid customers.” In 2017, Amazon shipped more than 5 billion different items via Prime. Amazon Prime costs $99 per year and offer free two-day shipping on over 100 million different items.