While I don’t think it’s guaranteed, I do think being selective about one’s instructor greatly improves one’s chances of cutting through years of trial and error trying to find responsible teams to join.
For example, if I contact a respected leader in “x” type of diving about training, he/she determines I’m a suitable candidate and evaluates me over the course as being at least competent if not proficient in the essential domains (planning, skills and judgment), I absolutely think paying another $100 per training day is worth it. That leader represents to me a reliable weathervane and reference point I can turn to about local (even global) divers, the community and opportunities.
I can find plenty of people that are qualified to teach a skill but that doesn’t mean they are respected leaders in their community of diving. For that order of instructor, I am not going to pay a premium day fee.
My natural disposition is to train hard before, during and after a course so I think I’m doing my part. I am willing to pay more for an instructor who is effectively doing his part to lead beyond his individual water column.