It probably would be. I'm not Wiccan, I'm not Pagan, and although I do not use the tools and thus may not buy many such things from the store I do think it should cover a bit more area then that.
Pagans and Wiccans are not quite the same thing, but just those two don't cover much for the people who work with this stuff.
Occult, I think, would cover most of the rest, but I don't know.
I do know that herbs do not really fall into any of those three categories. Most of the better herbs were not discovered by Wiccans nor Pagans and those who did discover them would probably not fall under the category of occult. Just my belief/opinion though. I think so long as the stuff is available most people may not care to much about the wording.