in the last few weeks i myself have been a victim of people buying my items and then not paying.
these people won the item and then said that money that was in paypal could not be transferred properly unless we put in a consignment postage number ,which basically means that the money was never in paypal and they tried to trick us into sending the item when they had no intention of paying, these bidders also asked to have th items sent to a different country! they were also new to ebay and had no feed back.
when they realised that no money meant no items the closed there ebay accounts ,so be aware i had to re list my item three times which cost me every time,dont be left out of pocket because of these fraudsters
always check that bidders are genuine .