Give the reader a second reason to buy your product.
And also prove them in some way that your product does what you say it does. This benefit is not as big as your number ONE benefit, but it is reason enough to persuade the reader to buy your product. This should be a functional and specific benefit. Like, "saves you $1,040/year", "Saves You 10 Hours a Week", "Lose 40 Pounds in 30 Days", "Learn how to code in 12 weeks." These are just examples, but you get the point.