Yes, we certainly think so!
Leanpub's goal is to be the best place to write and sell ebooks, but you don't need to do both.
You can use our great book writing modes to create ebooks from your manuscript in the PDF, EPUB, and MOBi formats, at the click of a button.
In particular, the MOBI file can be used to publish your book on Amazon, but there are other services that require PDF or EPUB files.
We also have a Print-Ready PDF option you can upload to different services if you want to sell print copies of your book.
You can create a book on Leanpub any time here: