Export eBay Active Listings as Text (csv)

Go to your active listings.

Set the listing length (at the bottom of the page) to a high number so all your items are listed.

Check off the box that selects all the rows.

Click "Edit" button, to go to the editor that alters multiple items.

Check off the box that selects all the rows.

Under the "Action" menu, select "Export to file". From there you can choose CSV or PDF.