You'd think more proof, more detail, more features would close them. It does the opposite. At a certain level, buyers aren't comparing specs. They're scanning for one thing. "Do you get me?", "Do you understand what's actually at stake for someone like me?" Miss that, and the best pitch in the world bounces off. Hit it, and the price stops mattering. So before you add another bullet point to your offer, ask what your best client is really afraid of. Then speak to that. Everything else is noise.