This is a really good way to get your first paying customer! Do you feel like you had to offer a discounted conservative price to entice them to be your first?
Not at all, I delivered and the first customer tested it a few times to see if the product does what it claims. Eventually, he purchased a plane without contacting me.
This project was my college project. I made it online as a public API a year ago. He contacted me via email and was interested in the paid version with a low-latency and more features.