I don't expect much of anything from self-published works. That doesn't mean they're all, or even mostly, bad; I just assume that if a work is self-published, it was unlikely to have been professionally edited and may have never been read by anyone but the author.

In terms of traditionally published works, I expect correct grammar and spelling and for the writing to be coherent/easily understood/clearly edited. That's honestly about it. There are enough sucky books that were published traditionally that I'm not surprised if a character's motivations don't make sense or whatever. That doesn't mean I like every book I read, just that I don't consider a book unfinished or unpublishable or whatever because of bad characterization or a lack of worldbuuilding, etc.