Ask people will they buy it. If they want it, you have something. From there, it's fairly easy to setup a CMS or Ecommerce store - either hosted/self-hosted - a

Ask people will they buy it. If they want it, you have something. From there, it's fairly easy to setup a CMS or Ecommerce store - either hosted/self-hosted - and you can get immediate feedback in the form of orders or messages of interest.