I have created 16 digital products using AI prompts, from e-commerce toolkits to developer second-brain systems. Here are the patterns that work:

Structure beats creativity. The best prompts follow a formula: context + constraints + examples + output format. Random creativity produces inconsistent results.

Variables are everything. Prompts with fillable variables (, ) sell better than static prompts because buyers can customize.

Test before selling. Every prompt must be tested with at least 5 different inputs. What works for one use case often fails for another.

Documentation sells. Buyers want to know exactly what they are getting. A prompt without clear documentation is a prompt that will not sell.