Price of Maintaining a Wordpress website (Monthly)?

Agree with using Netlify. Zero hosting fees, super fast and secure. If you're just looking for a landing page and blogging, it's actually really easy to set up using Stackbit (http://stackbit.com/) - which uses Netlify, Github, and Gatsby/Hugo to render static pages on a global CDN. It also comes with a 'backend' CMS for you to make changes. Payments just hook up using a checkout page URL.

I still pay a web hosting provider Siteground for my older Wordpress sites/products. US$20/m or over $200/y - so it's a cost that's not unsubstantial. Thinking of migrating those sites to static now!

Or I can help you set it up if you want ;) *shameless plug.
https://sweetjamsites.com

WP is the cheapest thing ever. Might not be as sexy as webflow and other "no-code" tools, but it's def the cheapest way to go.

Wordpress is fabulous. Pay a little for good managed hosting. I like Flywheel ($25/mo).

When I ran an educational site the bill probably averaged about $75-100/mo. Plugins and themes were a little over $500, then WP hosting and video hosting took up another $40.

WordPress will be much cheaper (and much more flexible as well). I have a pretty fast VPS running Apache where I host a few of my sites.

You could go as cheap as $4-5 a month with a solid shared hosting provider like Dreamhost, though.

You can host WP locally and then convert it to a static site and pay $0 :)

https://www.netlify.com/ is free to use and very fast.

You can also host the WP on any cheap server so you can make updates from the web. Then convert it to static when you want to update the site.