Okay, let’s calculate. Maria has a mix of teaching, training, and business skills. Teaching and training experience typically commands a rate around $50–$100 per hour. International business skills like marketing strategy and strategic planning can add another $25–$50 per hour. Considering her experience and skills, a reasonable estimate would be around $75–$125 per hour. However, since she’s in the San Francisco Bay Area, which is known for being one of the more expensive tech hubs, I'll round down to $125 per hour.