Okay, let’s calculate this. Mark has a broad set of skills, including furniture, custom furniture, and interior design, which are in demand. His experience in new business development, contract negotiation, and sales management adds to his value. However, the rate for a furniture professional in Hewlett, NY, may be lower compared to other industries or locations. Considering his skills and experience, I estimate his hourly rate to be around $125, which is below the average rate for sales and business development professionals in the area. This rate is also lower than what a carpenter or contractor with similar skills might charge. However, it's essential to note that this is just an estimate and may vary based on specific circumstances.