Okay, let’s tackle this. So Marc has 10 years of experience as a business owner, which is a significant amount of time to develop skills in contract negotiation, customer service, marketing, and sales. However, his experience as the manager of St Mirren FC for 112 years is not possible, as that would make him older than the club itself. Assuming that's an error, let’s focus on his business experience. The rate for entrepreneurs and small business owners can vary widely depending on the industry, location, and specific skills. However, based on national averages for similar roles in the United States, I would estimate Marc could charge around $100-$200 per hour. Considering his experience and skills, I would estimate a rate of $150 per hour.