New patients Botox special San Diego $9.00 per unit Best Botox special in San Diego Most commonly asked-for neurolytic agent Botox: This brand-name product has been well studied, and well known by our clients. We charge by unit. It is hard to know how much each person may need, but the amount used varies depending on the patients’ expectation, past history of use, muscle strength, severity of the wrinkles, antibody against the product. In general, we use 5-15 units for each crows foot, 10-20 units on the glabella (frown lines), 10-20 for the forehead, 4-6 units for the upper lip.