ovolord From my understanding 1 SS for every 200 words. For example Immortal Mortal right now each chapter to unlock you have to spend 12 SS, which mean that are around 2400 words in the chapter (12 SS x 200 words = 2400).
Every Premium Novel will have 1 FREE chapter per day from now on. For example Immortal Mortal the schedule is 3 chapters per day, but for FREE readers only 1 chapter will be available to read.