A 90-day launch plan for a one-person business with honest unit economics: equipment lists that add up to your budget, contribution margins, break-even volume, and explicit kill criteria.

Every number in the worked examples was recomputed and checked. Full prompt plus 4 fully worked examples. Works with Claude, ChatGPT, and Gemini.

Delivered as 1 ZIP file of about 23 KB containing the full copy-paste prompt as a plain-text file with fill-in variables and 4 worked example files with real inputs and real outputs, ready to paste into Claude, ChatGPT, or Gemini whenever you need a 90-day launch plan for a one-person business with honest unit economics, equipment lists that add up to your budget, contribution margins, break-even volume, and explicit kill criteria, and licensed for personal and internal business use, so the same prompt and examples with every number recomputed and checked can be reused for your next launch plan in any of the three supported chatbots, with the same fill-in variables and the same 4 worked examples to follow every time.