We're moving away from Kubernetes, to Aptible.
If you're asking these kinds of questions you shouldn't be using kubernetes.
If you are going to use it, be ready to have an engineer on your time be full time devops. Or be ready to hire someone who knows k8. It'll be around 110k to 140k.
But really, don't use it. The gospel you hear is from engineers who already invested their careers in it. Buyer beware.