If you have Mac OS X 10.6 or later and you’re looking for a tool to create ePub and Kindle books, you might want to check out Legend by ZappTek. It’s $99.99 USD, but you can download a demo and try it out before buying.
Hiring someone to format your eBooks will quickly add up. If you’re planning to create more than a couple of books and you don’t know how to do it manually, Legend could save you money in the long run.
I don’t have a Mac, so I haven’t tried it.