The book is way overpriced. It contains about 60 pages of text - a lot of which is at 22 font size, yes, really. Then the back third of the book is copies of plans for the mobile homes the author can supply. The author/printer has used thick paper, huge font size, and loads of repetition to fill it up. There is some useful information in the book, but it would more appropriately sell for about £5.99. 500 page books of normal font size which have taken years of meticulous research cost less than this one; I felt very ripped off.