Manuscript errors are unacceptable, but even after multiple edits of my 85000 word novel (seven compete drafts) my editor was still finding punctuation errors, bearing in mind that at this point she had read the whole book four times. If you plan to write anything for public consumption, you just can't edit the last few drafts yourself, because you are often blind to your own mistakes and bad punctuation. From a self published author's perspective, the worst scenario for me would be a quality ebook manuscript on Waterstones, that took thousands of hours to write, undermined by errors that make the author look bad and don't do the retailer much good either. It's all about respect for the reader. Having said that, it's rare to find anything absolutely perfect!
[name of book removed]
