Im not sure exactly what you are trying to say, broken english
possibly?Anyways, just follow the eBay refund policy. eBay and Paypal
make it easy to receive refunds from buyers, should be no problem.
not quite sure I understand your question, but have them just send you a
link to your store. Also, you could look for a particular unique item
they are selling and find them that way.
if there is a problem with the item the seller pays for shipping back to
them, make sure to use the paypal provided label through ebay. its
rather simple, ebay makes it easy for seller and buyer in this example.