I sold a used bag on eBay. It clearly stated used but in excellent condition. I even mentioned the flaw. Then the buyer emailed me she thought it is new and if she can retract her bid. She did not even bid, she made an offer. Then I emailed her if she will pay for the item. And I told her I am just going to file npb and leave negative feedback for non-payment. She then paid for it and got mad because I threaten her to leave negative feedback. Did I do the right thing? I don't really know what to do with situation like this. I am afraid she will neg. me when she gets the bag. Please tell me what to do next time this happens. Thanks guys.