My seller lost it because the buyers asked for a $500 credit for a loose doorknob. Five hundred dollars. On a $620,000 sale. You'd think they'd asked for her firstborn child and the family heirloom china. She called me screaming that these buyers were "nickel-and-diming criminals" and she refused to "be taken advantage of." I gently reminded her that she'd already agreed to $8,000 in other repairs without blinking. Didn't matter. This was "the principle of the thing." She wanted to counter by removing the washer and dryer she'd previously agreed to include. I had to explain that nuking a six-figure deal over what amounts to a nice dinner out was perhaps not the power move she thought it was. Three hours of phone calls. My blood pressure medication working overtime. Her husband texting me separately asking me to "just handle her." She finally agreed to the credit after I calculated that her mortgage on her new place was costing her $127 per day while we argued about this. Sometimes you just have to do the math slowly, out loud, like you're explaining it to a toddler.