From the “Collection” view, select cards that have active listings. Once you will see a purple button in the top right of the page labeled “Manage Listings”. Selecting “Manage Listings” will navigate you to the “Configure Listings” page. On this page you have several options for managing your listings:

When finished updating, select “Confirm Listing” and the item(s) will update. Prices can also be updated from the “Collection” page in line and will update to the marketplaces almost instantly.