Most websites are a program that runs all day so that it can occasionally answer a question. You pay for the program to be awake. You pay again when it falls over, and again when somebody finds a hole in it.
Quickieweb publishes files. Your pages are rendered once, when you save them, and served from object storage behind a CDN. There is no server to keep awake, no database to back up, and no runtime for anyone to exploit. A page costs the same whether one person reads it or a hundred thousand do.
What is actually running
While a reader is on your site: nothing of ours. Static files, a CDN, and their browser.
While you are editing: one small function that wakes up, renders your site, writes the result, and goes back to sleep. It is idle the rest of the month.
What you give up
Comments, search and anything else that needs to think while a reader waits. That is a real trade and worth saying plainly rather than discovering later. If your site needs to run code for every visitor, this is the wrong tool and you should use a different one.