Check with eBay rules. I believe the time for a buyer to pay is limited, seven days at most. You should send an email after 2-3 days and then once more the day before you report them for non-payment. After making a couple of attempts, your only choice after that is realist and report the non-paying buyer. It's the buyers responsibility to take care of his winning bids after he confirms them.
Malo periculosam, libertatem quam quietam servitutem." (I prefer the tumult of liberty to the quiet of servitude.). Thomas Jefferson
"All that is necessary for the triumph of evil is that good men do nothing."
-Edmund Burke, Loosely translated from Thoughts on the Cause of Present Discontents. (1770)