[HarryT]

I'm not familiar with this service. Is it something like Amazon's "Kindle Unlimited" service, where you can read as many books as you want for a monthly subscription?

It sounds as if they have a flawed business model, if they're taking in a fixed amount per subscriber, but paying out an amount that varies with the amount that the subscriber reads. KU's model of paying out a fixed "pot" of money each month that's split pro rata between every book borrowed seems more sustainable, although less desirable to publishers.