The range has to do with the size of your audience (web traffic) and the (literal) size and complexity of your site.While in the corporate world, I managed sites for which the company owned the infrastructure at a data center; the combined cost of servers, various other IT and storage related costs (including hosting) was in the seven-figure range annually.
Updating software, especially Wordpress plugins and versions, greatly reduces your risk of extremly expensive website security issues like hacking.
If you never check fluids or get a tune-up, it won’t work when you need it.
Maintaining your website requires some effort and includes a price tag.
Fresh content will also help you secure better search engine ranking.
If relevant, you can use user-generated content to help keep your website engaging and up-to-date.