Ask HN: How to Choose a Price for a Product?

Hey HN, for those that have built something and released it to the public, what was your process for deciding what to charge?

Did you pick the price based on data, competitors, users, a hunch? What if your product is misvalued?

In today's market with new products and SaaS's coming out daily, I'm curious if there's a science to this or if it's mostly "gut feel".