RJ Martinez

RJ Martinez teaches print on demand as a research discipline. In his own channel description he says he has been selling online for over 10 years and loves sharing what he learns with others; the profit figure he attaches to his last five years of print on demand is his own claim, presented on his channel, and is not independently verified here.

The work in this library is consistent across years: find a niche where demand is proven and competition is still thin, check it for trademark and policy risk before designing anything, make the design with whatever tool is current — Kittl and Ideogram recur across the catalog, alongside newer AI image tools — and then test the finished product the way a buyer would, including ordering samples and washing printed shirts on camera.

His recent catalog leans hard into two themes. The first is platform change: Etsy AI tests, Amazon Merch royalty and tier changes, and new AI search surfaces, each converted into a concrete audit a seller can run on their own shop. The second is shop teardowns — taking a successful Etsy shop apart in public, rebuilding its approach with AI in minutes, and showing where the rebuild falls short. The through-line is verification over hype: order the product, run the check, read the policy.