Okay, let’s tackle this. So Jeremy Greeff has 20 years of experience in sales and marketing, which is a solid foundation. However, his specific skills like offset printing, digital marketing, and business development are not as in-demand as they were 10 years ago. He's also based in South Africa, which might affect his earning potential. Considering his experience and skills, I'd estimate his hourly rate to be around $75, which is a relatively standard rate for a sales professional in South Africa. However, this is a rough estimate and may vary depending on the specific industry, company, and location.