Huh, Affiliates seems to have changed since I checked it out a few months ago, or maybe I misunderstood it back then. Thanks for the tip.

From memory there are actually a variety of different options. Ranging from 'link to us and get a cut if your readers convert to sales' through 'they will not even know Amazon is involved' and even the option of actually owning your own stock and using Amazon to handle storing and distribution. (None of this is as cheap as making some business connections and private arrangements. But it's a heck of a lot easier!)