talked to a pharmacist about this yesterday actually.
First thing they said was that it should be controlled for the younger crowd in case there is abuse. It is not that hard to get as is, this is a reasonable limitation to protect those who can't consent.
Also it has been out for around 10 years and costs less than $55, more like slightly over $40 in Manhattan. I'm sure if you went to county health you could probably get it for free or reduced cost.