Correct me if I'm wrong but there are two ways to order German DS .  The website ordering, and then direct contact through email or phone. Klickies are only available direct contact and never on the site. 
Also be aware that they have a special account coding for collectors.  If you are a confirmed collector they are more helpful in getting you things. They really dislike resellers, they don't want people buying a quantity of something from them and then selling it off on ebay. But if they know it is for your own collection that helps. I know Magayver  has the coding so he could order large quantities of parts for his special projects like Versailles.