Add a powerful, relevant testimonials from that Customer X here.
It should focus on the results your product achieved for them and could answer a doubt that the user might have in the buying process.
Headline: Customer X achieved 25x ROI in the first month itself!
Explain how the customer was in a similar situation as your user, struggling with similar problems. Talk about their transition to your product and the outcome: how it solved their problems and helped them achieve their goals.