If, at the end of the auction, the item was not sold (no bidders or reserve not met), you may resubmit the auction.  Simply go to your account page at http://epage.com/js/account,

and hit the "renew" link next to the auction.

During the auction creation process you may have selected "autorenew"; this means that the auction will start again automatically if the item does not sell.  You will receive email every time the auction renews, so you will know what is happening at all times.