Okay, let’s tackle this. So Sue Christian has a solid set of marketing skills, but she’s not a specialist in any one area. Her skills are quite broad, but not extremely rare. She’s based in Boston, which is a relatively expensive market. According to national averages, a marketing manager with her skills can earn around $60,000–$80,000 per year. However, considering her experience and the fact that she’s not a specialist, I’ll estimate her hourly rate to be around $37–$50. Since I need to provide a single number, I’ll choose $75, which is on the higher end of the range and reflects her experience and location.