Last year I sold a Pentium 4 2.8GHz Prescott chip for $5.95 + $2.50 shipping. Buyer bought the chip on a Thursday evening, I shipped out on Monday, since I couldn't get to it right away. Went to drop off, but forgot Monday was a holiday, so I promptly contacted the buyer of the error, and would immediately ship out the following morning.
Buyer replied with an angry message demanding I refund them $2.50 shipping charge for "incovenience", and continued to lecture me on how I had all this time to ship (I was still in the appropriate timeframe, mind you; my listing clearly states that it can take up to 3 business days [excluding holdiays]). I explained to this person that I was in my timeframe, and Ebay confirmed this, and explained that listing clearly stated shipping times, and I would refund them, just to be nice. Well, I didn't refund him because Paypal wouldn't allow a partial refund, only a full refund; tried the "send money" option, but Paypal would not allow it. So...buyer receives item. Two or three days later I get this:
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We had a heated exchange after I got the CPU back and tested it with MemTest and Prime95. I was being cordial with this person, but he continued to act like an arrogant prick; rude, and accused me of dishonestly listing the item as working. (It was working just fine before I sent it because I tested it.) Round and round he lectured me about how I don't know what I am talking about, and how "Prime95 doesn't compare to real-world applications and usage." Finally he replied back asking if I was such-and-such at Business X, and arrogantly asked "what do you know about computers?"
Mind you, I ship my items out from my place of employment, but it does NOT state the name of the business. I knew at that point he was going too far, and I made a call to Ebay...and did nothing. I had multiple agents, two of which believed he was having 'buyers remorse" another knew his explanation was a bunch of nonsense, and told me to file an extortion case because of those comments, which their fraud department didn't think it was extortion and dropped the case, and a week later ruled in his favor, and he left negative feedback.
When I got the Pentium 4 back, I extensively tested it with Prime95 for over 48 hours in two machines, without any issues. Left the computer running for nearly a week without a problem either. I took screenshots and camera shots of the result and the identifying information to show I wasn't just using any CPU. I filed for a fraudulent return this time, with the evidence, but Ebay didn't care, and didn't want to hear about it.
I put the CPU back up for sale with the same exact listing, and sold it under a week, and got positive feedback from the new buyer.