From the ShowHN rules <a href="https://news.ycombinator.com/showhn.html" rel="nofollow">https://news.ycombinator.com/showhn.html</a><p>> <i>Show HN is for something you've made that other people can play with. HN users can try it out, give you feedback, and ask questions in the thread.</i><p>If people has to pay to participate, it's not a good candidate for a ShowHN.