George, on the seller I would give it 10 days cause maybe they just ship out without confirmation emails, that has happened on more than a few occasions.
the buyer, something could have disrupted his life for the moment and again I would be patient and wait at least 7 days for payment. On the 5th day send another email telling him that you will report him to ebay as a deadbeat and leave neg feedback.
That about sums it up.
my 2¢
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy