I Made $152 in 23 Days Selling a Manus AI Optimization Tool — Here's Every Step

I launched a digital product 23 days ago. No audience. No email list. No paid ads. Just a landing page, a Gumroad, and a lot of Reddit comments. Here are the real numbers, unfiltered. The Product Credit Optimizer v5 for Manus AI - a skill file that automatically reduces Manus AI credit consumption by 30-75%. It analyzes each prompt, routes to the cheapest model tier that maintains quality, and applies prompt engineering improvements transparently.