Okay, let’s tackle this. So Geoffrey McDonough has 20 years of experience as a mediator/arbitrator, plus prior legal experience. He was an Associate Justice on the Massachusetts Appeals Court, which is a high-level position. His education from Harvard Law School adds prestige. Skills like mediation, arbitration, dispute resolution are in demand. Location is Greater Boston, which is a hub for legal and financial services. Legal professionals with his level of experience, especially in ADR, typically charge higher rates. Maybe around $300–$500 per hour? But considering his judicial background and Harvard degree, maybe higher. Some top mediators/arbitrators can charge $600+. Let’s check averages. Mediators with his background might average $400–$600. So I’ll estimate around $450