Ask HN: Is the amazon app store a good idea for premium apps

We have a premium priced app on the itunes store ($11.99: http://www.ullrlabs.com/solutions.html) and are getting ready to launch the android version. My business partner is worried about the pricing model there. Does anyone have experience with the amazon store (or other stores) for apps priced in this range? Have you had good or bad experiences and why? Any recommendations on things to watch out for before launching?