It is quite tricky to do this, as I think what you are thinking is to do a search for your “free” Listing.
The problem is that this will return a LIST of Listings. Not a single list. So you will get errors. What you need to do is do :firstitem so you only get one back.
Then you can send that to the group, and the items will pick up the group values that have been defaulted.
If you just have a single field it will be easier to set a custom state on page load and use that.
I have updated the forum up showing bringing back a single default thing and display it.
The initial values of the group fields are not set, so the placeholders are shown, but you could always set an “initial load” default and then override.