Personally I would take things further with expanding the ebook to be a packaged product consisting of video, audio, supporting resources such as membership site together with bonuses... That way you can put your product onto an affiliate platform like Clickbank, JVZoo etc - i.e. charge a lot more, pay out a massive commission to affiliates and hopefully make some great sales... Chances are you'll make much more than on Amazon as typically ebooks on Amazon tend to be much cheaper together with profit margins per sale...