Certainly worth the price! Contents excellent and I am very pleased. The only drawback is that the book is way too heavy. I wish they had put it into two volumes. I still would have bought it...even it made it cost a bit more. It's definitely not a book that you can carry around unless you have a rolling cart! It is thick, and the pages very thick paper. At least is 3 or more inches thick. Mine had the front cover a tiny bit turned up...I guess it had rained some along the way, as it was shipped to me...but it is fine now. I put flat on a desk and piled heavy books on it and it straightened out nicely. Good book with oodles of color pictures and wonderful text/ explanations and information.