I was in Hawaii in 76 and I paid $35 for a qt oz, that was an outrageously expensive price for that time when I was paying $20 an ounce ( as much as you could stuff in a baggie ) back home in NC  but after 5 of us got blistered off a pin joint we understood, I believe that ATF was a Ruderalis strain heavily Indica  laden but every grower knows that unless you take care and precautions years of the same strain become weaker, I doubt any true ATF will ever be seen again.