From Listia Help: If there are no bids yet on your auction, you can delete it yourself. You can do this by visiting your auction page and clicking the big red “X” delete button. You will be asked to confirm that you want to delete the auction.
If your auction already has bids, you will not be able to delete it yourself. If you open a support ticket we might be able to delete your auction for you. We cannot promise that we will be able to do it because it depends on the circumstances, but we will try.
You're welcome. I wasn't able to delete an item when I first started using listia and now I have a bad seller rating because of it. I don't want that to happen to anyone else.