I have both the audiobook and ebook, and I just wanted to share that I struggled a little with the audiobook. It was edited a little patchily and there would be audible (lol) differences between sound quality for sometimes just a word inserted into a sentence, or for a sentence in a paragraph. There are also occasional mouth sounds in the recording. If you are ND and have sensory issues this might be a problem for you. I could only listen with binaural beats in the background and whilst doing something like knitting. 

It's not a knock on those who made it, or even a complaint, just a head's up for other folks with sensory processing issues!