"It's no secret that this book won't make me rich. I don't know how many copies will be sold but in the end I expect the hourly rate for the writing to be in th

"It's no secret that this book won't make me rich. I don't know how many copies will be sold but in the end I expect the hourly rate for the writing to be in the low one digit € range. You might not be surprised that my consulting rates are a bit higher than that, but of course the book is good marketing for services." Unfortunately that is exactly what I think when looking at a lot of publications in that field. Many books about OS technologies are just printed out manual pages, others look like advertising for consulting. Always make me a bit suspicious.