If your client's product is sold in retail - they will need help getting shelf space for any production introductions. Do not let them go into an 'I need more space' meeting with a two-pocket folder from the office supply store.
The way to make an impression, and move the shelf boundaries wider, is with a thoughtful presentation that shows you believe in your product - that is, you are willing to invest in its success.
Here is a spectacular investment of putting your money where your mouth is -- showing you believe in your retail product. This type of presentation will get you that shelf-space.