A ghostwritten series runs $5,000-18,000 per book and months per instalment (Reedsy 2026 marketplace data). Instawritr Pro Plus writes the whole series on your own machine, one-time.

Everything in Pro — synopsis, manuscript, QA, cover, EPUB and a full audiobook (local Kokoro TTS, no per-word cost), staged to 6 stores — plus lifetime updates: every new feature and every new store ships to you automatically.

SERIES MODE, Pro Plus only: one command per book. A series bible carries characters, world, timeline and open threads across books. A blocking canon gate repairs contradictions before a book ships. Locked cover DNA and EPUB series metadata get the stores shelving them as one series. Validated on a 2-book series: both 94/100, zero canon contradictions.

Quality is measured, not promised. The QA loop rewrites weak spots until it clears a gate needing 90+, zero open critical defects and an empty revision list — a live run went 66 to 87 to 90 to 95 to 99. Books built by this pipeline are on sale in 51 Apple Books stores today; the full production record is at instawritr.com/teardown.

You also get a private members-only community (Forums and Chat), priority help when a run or a store submission snags, and model-config reviews to dial in the best model per stage.

Runs on your own AI keys or fully offline via llama.cpp. No subscription, no credits — we never see your manuscripts. Private GitHub repo, all agents and skills, HARNESS.md operator manual.