I know the author ( Dr. Danny Brown, or Gecko Dan as he's called in these parts),
he's great bloke and very knowledgeable and passionate about reptiles, he was once a full time vet and has 28 years of experience with not just reptiles but also birds, fish, amphibians etc.
I bought about 90% of my reptiles from him.
His books are definitely worth the money,
Just thought id share.