The US has a system where you get gold seal or something like that instructors.
I don't know the in's and outs of it but my MEP instructor was one. And he was a very good instructor. He said when he was teaching PPL the punters had the option of Gold or normal FI they had to pay more if they wanted a Gold.
Maybe some of the US people could explain it and what you need to become one.
And HFD you forgot that women will have to pay 10% more than blokes due to the additional emotional grief the male instructor has to deal with. If they are getting taught by a female instructor its the same rate. This can be payed back at the end of the course if they haven't bust into tears, excessive hugging after solo or grabbed your knee at any point while demonstrating stalling, steep turns etc.