Price's book is widely recognised as the definitive work on reproduction of medieval armour. Indeed, it's so good I'm considering buying a second copy - one for reference in the workshop and one for research in the home.
Price's writing style is accessible, and his instruction is comprehensive, never leaving the reader in any doubt about how a technique is applied. The photography is also excellent, providing informative accompaniment to the text.
If you are a metalworker, or even if you're just interested in armour, this book will not disappoint.