First, may I call your attention to the rules on using the ratings/comments found here:
https://www.askmehelpdesk.com/forum-...nes-24951.html
Your rating was not appropriate since there was nothing non-factual or inaccurate about my response. This site provides answers by VOLUNTEERS who donate their time and expertise to help others. To slap them in the face for trying to help, whether you agree with the answer or not is wrong.
Second, I don't know if you are hiding behind your return policy or not. Yes it DOES matter what Amazon says since you are selling through their site so you have to follow their rules and they need to protect their reputation. You need to get real if you think that doesn't matter.
On the other hand I do understand you can't warrant pre-owned items. That means you should NOT sell any item you have not tested to ensure that it works.
Finally, I didn't say you had to refund the money I said it depended on the wording of your agreement with Amazon and the wording of your policy. Without knowing what that wording is, I don't know whether you are protected or not. I do know that a business can't sell items that they know do not work unless that fact is disclosed.