The book is very thick, but at then end it's all about the gas method and N sources. The rest is more theoretically.
Who decides, that one is mentally ill and can not purchase the book? Some say, their neigbors are.
Some of his critics would claim, that Nitschke himself has some mental illness, because of his silly acting and should be banned from reading his own book.
The fineprint "If you are not over 50 years of age, please do not waste our time by buying the book! Your purchase will NOT be honored." can also be interpreted, that in this case there is no refund and they scam you.