Okay, let’s tackle this. So Donna has 28 years of experience in purchasing and supply chain management, which is a significant amount of time. Her skills include negotiation, inventory management, and sales management, which are all in demand. Location is Commerce City, Colorado, which is a mid-sized city. According to data, purchasing and supply chain professionals in this location tend to earn average salaries. Considering her experience and skills, I would estimate her hourly rate to be around $75, which is on the lower end of the scale for someone with her experience. However, this is a general estimate and may vary based on various factors such as industry demand and specific company requirements.