You can upgrade a Free profile to a Basic or Featured profile. You also upgrade a Basic profile to Featured. This is done on My Vendor Listings.
Simply choose a different option from the Package drop-down.
You will go through the same process you went through to set up the profile originally. If you choose Featured, you’ll have the opportunity to set your Bids. You will also have the opportunity to purchase additional Credits if upgrading to either Basic or Featured. Credits are used for Clicks and Leads.
There is also a link on this page to compare packages.