What traditional narration costs
A professionally narrated audiobook is typically billed per finished hour, and a full-length novel runs many finished hours — before studio time, editing, and proofing. A multi-narrator or full-cast production multiplies all of that, which is why most independently published novels never get an audiobook at all.
Here, the cast is generated from your manuscript and revisions are cheap: change a voice, re-render a chapter, and listen again the same day. The economics of iteration finally match the way authors actually work.