### Background<p>I&#x27;m a 19 year-old student and developed a school project, which got the interest of a few local business owners (I&#x27;ve emailed and made some phone calls using my network around college).<p>It&#x27;s a very niche business for a specific problem, so they got very interested and 3 of them wanted to sign up. I would charge them on a per user basis.<p>### The problem<p>I can&#x27;t find a reasonable way to bill customers.<p>The &#x27;platform&#x27; consists of a Rails app hosted on AWS. I would make API calls from my original application to a new payment application, telling how many users each company has. Then, in the payment application, I would use Paypal to monthly bill them.<p>Would that be okay? Any security issues? Is there an easier way for a single newbie developer?<p>Thanks so much guys!
Ask HN: I got customers for a school project. Can't bill them.