This is commonish in translation community. There are sites like wuxia world and woopread that have a lot of translations of east asian web novels that you can pay to see chapters earlier. Some do it as pay per chapter others as a subscription model for early access. I do also see a few self published fantasies/romances that do this on tapas but would guess few do well enough. Normal model here is short chapters of about 5ish pages sold for l0-20ish cents per chapter. This leads to many series having massive chapter counts. 1000 chapter stories are pretty common here and longest popularish one I know is like close to 4k chapters.