[jdbowman]

Sounds like "free" may be even better than cheap, given the small number of people you mention.

For instance, an always-free f1-micro instance from Google Compute Engine would work well.

Or Vercel https://vercel.com/pricing (formerly Zeit, I believe) may also fit your needs, assuming you can adapt your Python where needed.

Another option that might require modest refactoring of the Python: host the site as a static site on Github pages or Netlify. Then make the backend (still in Python) using AWS Lambda or Azure Functions or Google Cloud Functions.