And what will encourage new shooters to practice?.....ammo that costs $15/50rds or ammo that costs $15/500rds?
Practice doesn't make perfect - that's a myth.
practice makes perfect.
I stand on the $15/50 side of the fence as being the better choice for perfect practice.
When something is more expensive to use - the added cost of the item makes a person tend to pay attention more to how they use it.
That's true from owning your own house vs renting, right on down the line to ammo for practice.
It's got nothing to do with "trigger time" & everything to do with "quality" time.