I HIGHLY recommended that you get it in hardcover, though. I had a very difficult time seeing much of it because no matter how I tried my device just wouldn't render some of the images in a high enough resolution.
The ebook edition actually contains this warning at the beginning of the book. (I keep my e-reader in Night Mode)
Keep this in mind if you decided to give this book a try, which I would highly recommend for anyone interested in Marilyn Monroe.