Okay, let’s tackle this. So Shirley Roggen has been working as an interior designer for 52 years, which is an extremely long time. Her experience spans multiple decades, with a strong focus on residential design. Skills like furniture, interior architecture, space planning, and custom furniture are in demand, but the rate is lower due to the fact that she is an independent designer, not part of a large firm. Location is Portland, Oregon, which is a relatively affordable market. Considering her extensive experience and skills, a rate of $125 per hour seems reasonable, which is below the national average for interior designers in the US, but still reflects her value as a seasoned professional.