Cathy,
In the lower panel of the Ad, you should see a group of User Options and a group of Admin Options that look like this:
User Options
Add to Watch List · Report Product · Receive Email Updates Post Comment
Admin Options
Edit Ad · Sold It! · Move/Delete · Make Sticky · Make Index Thumb
Under the Admin Options, use the link to Move/Delete the Ad. You will be required to supply your password before the delete takes effect. If you don;t see those options, then the Moderator privs do'nt allow you to do it and one of the Admins will do it.
Before you delete this Ad, let's wait until people comment on the policy. I agree that this one is a marketing one and should not be allowed. Hope this helps.