When putting together your listing it is important to avoid some costly mistakes. I don’t mean costly as far as financial investment but rather the cost of unknown bidders because your listing “made them go away”.
Four Easy Ways to Get Free Marketing for Your Information Products

Some people considering how to profit from selling information products online may be intimidated at the thought of spending hundreds, or even thousands of dollars on an advertising budget to garner high doses of traffic to their domain.
But selling information products doesn’t mean you have to spend a penny on promotions, if you don’t want to. There are four fast and easy ways to market your wares on the ‘net for absolutely nothing.
Keeping in Touch with eBay Customers
It costs much more to gain new customers than it does to retain existing customers. Increase your profits by keeping in touch with eBay customers. They purchased from you once; give them a reason to do so again.
Brainstorming Ideas to Create Your Information Product Empire

When you make the decision to market information products on the ‘net, your first step is in conducting some niche research to see which target audience could provide you with a virtual goldmine of profits.
You can’t just come up with a single idea for a narrow niche audience and expect that to be enough to deliver financial security for the long-term. Instead, you want to tap into a niche with endless possibilities, or at least enough to make your product development worthwhile.