Ticket listings that required barcodes to be entered upon listing will never expire! You don't need to worry about the listings being temporarily unavailable for sale if you can't get to a computer to renew right away, or keeping track of expiration dates and times.

Since listings never expire, it is important that you delete your listing as soon as possible if you decide to use them, or sell them elsewhere. Otherwise, they will be available for purchase through the start of the event.