The few 'new idea' type books I've found to be useful are rather thin, printed on cheap paper, and have rather large text. Even they are padded out, but at lea

The few 'new idea' type books I've found to be useful are rather thin, printed on cheap paper, and have rather large text. Even they are padded out, but at least a bit less so. The problem is, I don't think people will pay $30 for a 50 page book, even if the ideas inside it are worth the money.