I have been experimenting with selling micro-priced digital products on Gumroad. Developer cheat sheets for a dollar, AI prompt templates for two dollars. The margins are great since there is no marginal cost per sale. Store is at stevewave713.gumroad.com
For quick reference I put together some printable cheat sheets for Python, Git, and VS Code. Having them on my desk saves me from constant tab-switching. Free wallpapers and icon packs too at stevewave713.gumroad.com
I have been working on structured prompt templates for different use cases. The biggest improvement I found was using context-first prompting and explicit format specifications. Compiled 30 templates at stevewave713.gumroad.com if anyone wants to check them out.