There are a number of factors that will affect how much money you can make from writing a book. First, if you hiring a ghost writer or use book publishing services, you will have to pay for these services. Second, the best ghost writers will typically charge more than lesser-known writers. Third, the specific book publishing services you use will also affect your costs. Finally, the amount of money you can make from your book will depend on how well it sells. Overall, then, there is no simple answer to the question of how much money you can make from writing a book. However, by carefully considering all of the factors involved, you can develop a good understanding of your potential earnings.