The book is good, and my granddarlings enjoy it. But my advice is to get the book rather than the Kindle version. The Kindle formatting is less than wonderful. In some cases the text shows up in the font and size you've chosen; in other places it shows up in such teeny-tiny type that even the kids can't read it, let alone an old woman like me. Zooming in doesn't help the type at all; it will make some illustrations big enough to see detail in, but not all of them.
I like having kids' books on my Kindle; it has helped out in a number of little emergencies when the kids could no longer cope with waiting for whatever it was we were waiting for -- a table in the restaurant, a minor car repair, an appointment of some sort, the errand their mother was running. Unless you're familiar with the book, though, and can fill in from memory all the places you can't read in the Kindle text, this one is just going to frustrate you and the kids.
UPDATE: This books shows up very well in the Kindle Cloud Reader on my iPad. The illustrations are easy to see and the text is all readable.