What the business is
A $39-per-report AI tool that pressure-tests business ideas for would-be founders.
The bet
That packaging pre-written ChatGPT prompts into a $39, 50-page validation report is worth paying for, faster and more reliable than a pile of Google searches.
Starting capital
Under $200: $150 for the domain, $35 for hosting and a database.
How it started
Sal Aiello, a longtime CTO for tech startups, and Monica Powers, a product designer who runs the branding firm Mascot, met at a Y Combinator virtual founder meetup in 2022. Running their own side-hustle ideas past ChatGPT in March 2023, they realized their skill at asking it the right questions was itself a product.
What happened
They built DimeADozen in four days and launched in March 2023 at $39 a report: a form in, hundreds of pre-written prompts out, answers compiled into a 50-page report on the idea's potential investors, customers and competitors. By October the tool had taken in more than $66,000, nearly all of it profit.
How it ended up
In September 2023 the founders sold DimeADozen for $150,000 to Felipe Arosemena and Danielle de Corneille, a software engineer and a product designer making it their full-time jobs; Aiello and Powers stayed on as advisors at roughly five hours a week.
What has to be true
The platform shift was the opportunity: ChatGPT made prompt engineering valuable, and the pair monetized their own skill within weeks of noticing it.
Distribution cost was near zero at their scale — a $39 self-serve report for want-repreneurs needed no sales team and under $200 of capital.
They sold at seven months with real revenue rather than chasing scale, because two founders with day jobs valued $150,000 plus their time more than a speculative bigger outcome.
Hallucinations were a live product risk; weeks of strict prompt tuning were the mitigation, and the founders never claimed the reports were more than faster research.
What can be applied
When a platform shift makes a skill abundant, wrapping that skill into a focused paid product can beat building infrastructure — and a fast, small exit can beat holding out for scale.
Aftermath
As of October 16, 2023, DimeADozen belonged to Arosemena and de Corneille, who were making it their full-time business, while Aiello and Powers advised at roughly five hours a week and kept three other side hustles going. Aiello's stated dream — a validation tool 'ubiquitous' enough for Salesforce to someday buy — stayed aspirational; the realized outcome was the $150,000 sale itself.
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