They made $8.8 billion in 2016, I think it's fair to say they expect to make far more than that in 2018. While their US rates may be $7-$12 per subscriber, the

They made $8.8 billion in 2016, I think it's fair to say they expect to make far more than that in 2018. While their US rates may be $7-$12 per subscriber, their international revenue projections may be quite different. For example at current exchange rates I'm paying just under $15 USD for my account in Australia(though I'm sure not every country is so expensive).