I really liked reading these. I don't know much about the original fairy tales, so I cannot compare, however I found this book a very enjoyable one.
There are the classic bedtime stories, the ones we all know (but they are written in such an amazing way, they feel new) and then, there are the ones you've never heard, and I found it so interesting and fun.
They are great for reading aloud, but if you were planning to read this to a young child, let me warn you... some of the stories are a bit gruesome. There's one where a couple crushes a someone's skull with a millstone, for example, and quite a few where someone is hanged, etc. They are wonderful stories, please don't get me wrong, but I'm just pointing out that it might be an idea to read them through first.
I hope that didn't put you off, because I love them, and at that price who cares anyway whether it's to your taste or not!
I'd say do it.