Typically, eBay keeps your listings and sales data for a limited period of time, and it does not allow you to import your data directly from eBay. Thus, if you happen to use other applications where such data might be needed, you are out of luck here. However, on Wonder Lister, all your data is kept offline, right on your own computer. Therefore, you decide how long you need to keep it. Wonder Lister also provides the flexibility to export the data in flat files which you can import to other applications.