One of the first questions I get when someone enquires about my book writing services is, understandably, 'How much will it cost?' To which I respond, 'How long is a piece of string?' Well, not really. At least not in those words, though the sentiment is the same.
While I completely understand that a potential buyer needs to have some idea of cost, the challenge for a ghostwriter is that we can't afford to lock in a price that is unrealistic, and there are *a lot* of variables that determine how much work will be needed to write a book.