I am happy to announce that my books are now available on Amazon in both electronic and paperback versions. E-books are also available on LeanPub.
Paperbacks can be ordered from the US, UK, German, French, Spanish, Italian, Japanese, and Canadian Amazon sites.
Below are the direct links to the main places where you can find the books.
Paperbacks in Europe
Paperbacks in the US
E-books on LeanPub
From the publisher
If you are located in the Netherlands or if you know you meet me in person in the near future, I have a pile of Using Perl 6 and Perl 6 Deep Dive which I can handle or send to you within the country. Contact me for the details.