The cooperation was recently ended, obviously under quite some public pressure, since amazon's own terms don't allow racism on their partner webpages. But the fact that they started such cooperation in the first place is rather disconcerting in my opinion.
Of course their main interest is to reach as many customers as possible, but they should pay some consideration as to what kind of people they're going to bed with.
Do they have this kind of cooperation with other fascist parties as well?
Here are two article on the subject, sadly both in german.