Has anyone had any experience with Amazon Web Store? Although I haven't tried it myself, one of the most appealing things about it is that the customer can use their amazon account and if you opt for the fulfillment by Amazon option (which is a different optional service), your customers can use their prime shipping account to get free two day shipping and Amazon takes care of the entire shipping process. Sounds like a killer feature but I was just wondering if anyone had any real experience with it.