I think this is the mindset for most people starting. Zip submits seem like the easiest to promote and get people to do. However, as others have said, it is quite hard to break even and it takes awhile. You could bid high for a while, lose money, and 3 months down the road have a nice rank while paying little and begin to make your money back. But that typical scares away anyone not wanting to go into debt advertising an offer.