eBay item didn't ship yet

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seller didn't ship a hard drive recently. before that, they had excellent feedback.

http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=dallas.texstar&&_trksid=p2047675.l2560&rt=nc&iid=172123867105&sspagename=VIP%3Afeedback&ftab=FeedbackAsSeller

thanks hal for your clear advice, I will tell my friend to open dispute with eBay.