Indeed, anyone can order it.
Here is how I did it:
1. Go to: http://deintabak.de and register for the site. I suggest visiting with Google chrome and allowing it to translate the site into english since it is entirely in german.
2. Once you are registered, place an order.
3. Herbert Motzek does not take credit cards or paypal. With your order confirmation email (also in German - use google translate if you need to) you will receive bank wire instructions.
4. I used Western Union to make a bank wire transfer to Motzek online using my credit card at the Western Union website.
5. In about 10 days a package arrives at your door.