Good points. I think probably having a few options available makes sense. Some people will not want to pay anything. Some will want to pay per piece of content. Some (a much smaller %) will actually want to support your work on an ongoing basis. Have you heard the idea of a "crowd wall?" You attach a price/threshold after which the content is unlocked/published for everyone, and from there people can still tip extra if they want but it's freely available for consumption. For me personally, that may be the only time I'd want to attach a specific "expectation" to something I post. There are times when you create something and you don't think it's worth all that much, but you're surprised to find out that others do and you get tipped/paid more for it than you would have ever valued it. And there are times when you overvalue something you've made, and nobody else thinks it's worth anywhere near what you think it is 🤣 And it's not necessarily anything you can objectively say why the difference exists. Such is the nature of art, I think.