While the cost of Prime membership—$99 per year for nonstudents and $12.99 per month—certainly adds to Amazon's bottom line, the company also sees a bump from Prime members in other significant ways.
According to a report from Consumer Intelligence Research Partners (CIRP) released in October 2017, Amazon Prime members spent an average of almost $1,300 per year on the platform, compared with $700 for nonsubscribers.
Amazon experiences other benefits from Prime membership as well. October 2017 research from Feedvisor found that Amazon Prime members are more frequent visitors to the service, and also make purchases more often.
For example, 31% of Prime members visited Amazon on a daily basis, compared with 11% of other shoppers, according to Feedvisor. In addition, the firm found that 24% of Prime subscribers made a purchase on Amazon at least twice per week, while just 4% of non-Prime shoppers did the same.