A Listing represents an item for sale. So, it consists of information about the item being sold, how it is being sold, marketplace specific information, how will you accept payment if it gets sold, the shipping information, your return policy and such other information. A Listing can be created in Wonder Lister first and submitted to eBay either immediately or at a later point in time. Similarly, if a listing already exists on eBay, it can be Imported in Wonder Lister. When you setup Wonder Lister for the very first time, all Active listings that exists on eBay are Imported into Wonder Lister's local database. You do have the option to manually import your Ended/Completed listings from eBay.