Hmm, looks like GitHub pages are a paid feature? One of our private repos hosts our (public) website. Even with the price cut, the Team plan is still almost $100/month more expensive than the grandfathered in legacy plan we currently have that includes GitHub pages.
Yes, I considered it, but that's how unfinished draft blog posts end up on HN ;). We'll probably just stop using Pages and deploy to S3 instead - it's a fairly minimal change.
Or you can use Netlify connected to a private GitHub repo. I use it for my personal website (hugo blog) and it works flawlessly. CI/CD integrated, so it's just push to deploy.