You would probably be surprised at how little money a textbook author makes per copy. Think $2.00 on a $200 book. It can add up to a significant sum if you're

You would probably be surprised at how little money a textbook author makes per copy. Think $2.00 on a $200 book. It can add up to a significant sum if you're lucky enough to have your textbook adopted by many large universities nationwide, but I'm dubious that anyone is getting rich from a textbook used at only one university, even a large one.