A good product statement should be efficient and persuasive, with an organic feel, an authoritative presence, and an entertaining component.
Done properly, It is the most cost-effective sales tools one can use.
I am used to doing 35-50 product listings a day, focused and with humor. Please check out the "Quick Ones to Get Through the Day", available for viewing as a .PDF form in my Freelancers portfolio, as an example of some of my more humorous, memorable, and successful listings.