https://www.cnbc.com/2018/01/03/amazon-echo-owners-spend-more-on-amazon-than-prime-members.html

Amazon Echo owners are Amazon's most loyal and frequent shoppers, according to a new report by Consumer Intelligence Research Partners (CIRP).

The report says Amazon Echo owners spend on average of $1,700 a year on Amazon, more than the $1,300 Amazon Prime members are estimated to be spending a year on the e-commerce site. That's 66 percent more than the average spend by all Amazon customers, the report said.