For now, isolated. Arkansas says vaping juice and hardware are tobacco products, so fall under the same state taxes and regulations as any other tobacco product - same as cigars, snuff, chewing tobacco, etc... any tobacco that is not called a "cigarette" actual cigarettes have even more taxes.
Because of the tobacco tax, many companies will not ship here anymore. It's too much hassle for them to mess with having to charge and, file Arkansas tobacco taxes when they aren't Arkansas based companies. Two e-cig/juice companies are Arkansas based, so they will ship to me however, it's cheaper for me to drive 35 one way (about 70 km) miles, to the Texas brick and mortar shop of one of those companies than to pay Arkansas taxes.
I suspect it will be all states before long, assuming FDA regulations don't kill the industry. Taxed is better than gone but, still, it's a headache since my state is, at this point alone in calling vaping smoking.