We offer free built-in (kubesail managed) domains, but don't offer domains for purchase - that would be nice to add eventually but we're a small company, so holding off on that for now!

Ideally, you don't need to learn Kubernetes any more than you need to learn Linux in that example - our Repo Builder will do it's best to guess how to host your app on Kubernetes - and ideally the UI makes the rest feel like any other cloud platform. The benefit of not being locked in, and of learning open source tech instead of walled-gardens, is hard to express!