Okay, let’s calculate this. Robert has a Phd in a relevant field, which adds value. His skills in polymers, product development, and chemical engineering are in demand, especially in industries like plastics and coatings. However, his location in Baltimore, MD, is not a top-tier location for these skills, which can impact rates. Considering his education and skills, I estimate his rate to be around $125 per hour, which is slightly below the national average for chemical engineers and polymers experts. This rate is also lower than what experts with similar skills in San Francisco or New York might charge, but it's a reasonable estimate for a mid-Atlantic location.