Author uses ChatGPT to speed Mercari market research
A writer tested ChatGPT for reselling research on Mercari, a Japanese marketplace, and found it cut hours of manual work. They started by asking the model to organize research priorities—like brand, material, or condition—for products like wallets, bags, and jeans—categories they plan to test. ChatGPT suggested frameworks for narrowing candidates, calculating profit margins, and…
Key points
- ChatGPT organized research priorities for reselling items like wallets and jeans, saving hours of manual work
- Author plans to test small batches on Mercari, then refine AI prompts with real-world data
- AI handles calculations (profit margins, reverse pricing) but humans confirm actual listings and conditions
The author emphasizes AI’s role in speeding research, not replacing human judgment. They plan to validate top candidates manually by listing small batches on Mercari, tracking sell times, and feeding results back into future prompts. The goal is to build a cycle of AI-assisted research, testing, and iteration. While not yet profitable, they see potential in using AI to handle repetitive tasks—like comparing listings or crunching numbers—while humans verify real-world viability.
Sedori x AI might become essential from now on. A surprising story about doing Mercari market research with ChatGPT
note.com · 30 September 2026
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2sources- Jaspreet Singh: 3 Ways To Use ChatGPT To Become a MillionairePress · aol.com ·
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