Somewhat more importantly, if you want to get your book published in the first place, agents and editors judge manuscripts in the same way.
Ray Rhamey, writes a wonderful column called Flog a Pro in my favorite writing website Writer Unboxed, where he analyzes a first manuscript page of a popular book to see if it passes the test. It's a given that the work must be beautifully written (Fifty Shade of Grey notwithstanding), or at least competently written (Fifty Shades of Grey notwithstanding) but after that Ray says people will stop reading if those lines don't contain these essential elements:
- Story questions
- Tension (in the reader, not just the characters)
Whether you agree with him or not it's an interesting exercise. Read Ray's latest column about a David Baldacci bestseller - then do it with your own first page and see how it stacks up.