Currently none, but that's mostly because we've worked hard to keep it that way. I publish finance updates on a GitHub Discussion (https://github.com/endoflife-date/endoflife.date/discussions...). We used to pay $9/mo for Netlify Analytics but didn't find it helpful.
We also have a pretty long roadmap (https://github.com/endoflife-date/endoflife.date/issues/2108) that focuses on integrating better with the sbom ecosystem (We want to make an API that does SBOM->EOL alerts for eg). Such projects require a lot of development effort, and we'd like to be able to sponsor it on our own (via grants/donations).
> We want to make an API that does SBOM->EOL alerts for eg
You could consider making more expensive features paid options? Definitely tradeoffs there but it is an option, especially for business-useful features