Selling your designs on print-on-demand marketplaces — Idea Report #004

T-shirts, stickers and mugs printed and shipped by someone else.

You upload original artwork and slogans; a print-on-demand marketplace puts them on T-shirts, stickers, mugs and posters, handles the storefront, printing, shipping and customer service, and pays you a margin or royalty on each sale. You never hold stock.

What's inside the full report (PDF):

- Account tier and fee math for Redbubble, with worked examples

- Merch on Demand royalty groups explained

- 90-day design and upload schedule

- Niche-research and tagging checklist

- Trademark / copyright checklist

- Risk table, scorecard and sources

Every fee and royalty rate is taken from the platform's own documentation (sources linked). Every income figure is labelled as an estimate with its assumptions shown — no hype, no guarantees.

General information only; not investment, tax or legal advice. No income is guaranteed. Research as of October 2026.