We just ended our first month since going live, and it's been quite the rollercoaster.
Mostly emotions and reflection, as I wasn't expecting that it would be so difficult to get traction on a new premium WordPress plugin. Even with a free version released on WordPress' official repository, growth seems to be flat.
In short, in our first month we had 0 (zero) customers. However, here's what we learned: https://slicewp.com/blog/january-2020-transparency-report/