It is easy to buy Dianetics and Scientology Books this holiday season. Everything is available online. A fellow blogger posted this great article giving all the data and links you need to find what you want:
You may notice that I also have some links to basic and intro books in my right-hand sidebar, just in case you want to go directly. If you want to browse you can click the link to the article or you can try this one: Scientology Books.