Bol, coolblue, Amazon.Com.be or .nl all deliver to Germany. Actually I often do Amazon arbitrage, same coffee machine fun the same warehouse may be 200€ cheaper on Amazon.fr than in any German shop including amazon.de. and the Belgian store has less choice but often better prices. Makes no sense but true.
That brand doesn't sell their stuff on any of those websites. I have bought in Belgian and German web stores before, but I can't really do that if they refuse to show me their QWERTY product offering.