The Bitter Script Reader answers my question about his experience with competent scripts. I like his zen approach to accepting poor formatting, then moving on.
With what percentage of scripts is the quality of formatting and screenwriting craft sufficient enough that you can just settle in and review the story on its own merits?
Hard to say in terms of percentage, but I’d say that maybe at least 75% of the scripts I read fall into this category. There are a lot with formatting errors, but usually by ten pages I’ve accepted the formatting flaws and managed to commit to reading the story without getting angered anew on each page.
For more answers and insight, check out his post.