Typos and puns and fans

Over the last week or so I've been reading a kids' fantasy, The Midnight Glass, by D T Vaughn. It has a great climax, and a couple of neat surprises towards the end. Other people might have seen what was coming, but I didn't, so they were very pleasing when they arrived.

Unfortunately there are some typos and missing words in the book. It seems as if other people who've read it weren't perturbed by this, but having a kind of proofreader's eye, those sorts of things stick out like a sore thumb....