Sat. 10-31, went with the kids on a hayride. Pass the gas station..$2.19, we go on the hayride and out to eat....Gas is now $2.49. Then we stopped at Meijers, and Kroger's...the same places have now dropped to $2.39. By the time I'm heading home around 6 PM....back down to $2.19. Now how can it change that much, and that often in ONE day?