The answer to that question depends on a lot of factors. I’ll start by saying that the type of ebook you write is not nearly as important as how well it is written, marketed, and priced. The most popular ebooks are those that provide value to their readers. If your ebook teaches people something they can use in their everyday lives, then it will probably sell well. If it’s just a rehash of information that anyone could find on the Internet for free, then chances are it won’t do as well. Pricing also plays an important role in whether your ebook sells well or not. If you price your book too high, then readers may not buy it even if they like your content. On the other hand, if you price too low, then you won’t make any money off of each sale either.