letsencrypt is free, wosign is free; maybe there's something else which is free; they don't require a lof of effort to install them. who are your customers then who pay for what they can get for free?
@brettz, not sure if you work for PornHub or not, but if you do and this question isn't weird for here: do you know if PornHub would be interested in a video superresolution service tuned specifically for pornographic content? i.e. upscale SD to HD or HD to UHD, but with state-of-the-art algorithms that go far beyond "dumb" upscaling. My friend and I are tinkering with the idea of starting a small service to do that, filling specifically the adult video niche so we can focus the algorithm for improved performance (versus a more general superresolution technology).
Sorry if this isn't in your wheelhouse or it's inappropriate to ask in a HN comment.