As a personal trainer, my rate goes by a sliding scale of $75/hour. My clientele is wealthy and highly educated. As a kinesiotherapist, gerokinesiologist, exercise physiologist, and personal trainer, I also hold various certifications and have a 20+ year background in classical ballet. I have a given rate with institutions hiring me, such as a fitness center and a retirement residence, but wonder what to charge a company with 450 tenants wishing to offer fitness classes as an additional service to its tenants.