Sadly, I don't read nearly enough to justify a $10/mo subscription. (This is something I'd like to improve, but I have ADHD and poor reading comprehension.) This is contrast to a service like Google music that I use nearly every day. I wish there were a cheaper tier with perhaps fewer rentals at a lower price. Based on the current volume of reading that I do, the most I can see myself paying for a subscription is about $3~5/mo.