Dunno, Frank, but I will say that gas prices have dropped significantly in the past month or so. Right now, in north-central Missouri, a gallon of 87 octane "unadulterated" goes for $2.959.
I've heard it said that the reason for this, and perhaps that extends over to the availability of 87 vice 89 octane up in NE, is the refineries are switching over to winter blend gasoline. It's ostensibly easier to refine than summer blend.