$5,000 over a logo seems like a stretch to me. Maybe the client was already looking for a reason to walk, and the logo just gave them one. I've seen deals fall apart over way bigger stuff, like missed deadlines or bad communication, and a 20 minute fix usually doesn't save those. Idk, it feels like the logo gets blamed for a problem that was probably brewing underneath. Not saying a bad logo doesn't matter, but buyers rarely bail on real money just because the mark looks off.