Reading all this, I'm not even sure I want to BUY stuff from them anymore. They sure are handy though. For me, that's always been the selling point... All different kinds of things from one place. One site, one order... Done. I always try to get the stuff that comes directly from them.
Ive been selling on amazon for almost 2 years, sales continually to increase. Amazon was selling in my niche PRIOR to me selling there but I do quite well there even competing with them. Its not all doom and gloom.