This is a bad system, I understand that you want to pay your authors more, but this is extremely missleading. You're basically paying for a one time mass release, and you still have to unlock the chapters. One of the high ranking novels had a "privilege" price of 2500 stones for 25 chapters in advance. That's 100 stones per chapter! And after you unlock this you still have to wait for regular releases. I understand this is optional, and also that it's a way to support the author. But again, this is missleading, and there's still no other system in place to incentivise the readers.