This rate is quite low, considering Eric's skills and experience. A more realistic estimate would be based on industry standards for sales and customer service professionals in his location. Typically, sales representatives and customer service experts can charge $25-$50 per hour. However, without more specific information about Eric's experience, qualifications, or industry demand, it's difficult to provide a more accurate estimate. Let's assume he's just starting out or working part-time, which would put his hourly rate at the lower end of the spectrum.