Hi Rachelle,
The amount of time it takes for an item to be automatically relisted after it ends depends on how the auto-relist profile you are using is configured. When creating an auto-relist profile through Auctiva, you can configure it to auto-relist your items immediately after they end, a certain number of minutes after they end, or on a specific day and time.
Any additional questions or concerns? Please feel free to contact our customer support team using the appropriate link on our help page: http://www.auctiva.com/free-auction-software-help/help.aspx
-Mike