Of the vanity publishing options, seems Blurb is the best.

Blurb BookSmart is the only start-to-finish publishing service simple and smart enough to make anyone an author. (This means you.) Better yet, the software is free. So download and play all you like – you pay only when you publish your bookstore-quality book. How sweet is that?

Blurb | Frequently Asked Questions

If you are actually able to write a book, you can print just one copy if you wish. Cost ranges anywhere from $30-$80 / book. Less if you print more copies.