Here in Rhode Island 87 octane is $2.93 or so.
I just got back from a 4 week snowboard trip to Wyoming, Colorado, Utah. When I arrived in Denver, (middle of March) gas was around $2.60 a gallon. But, when I crossed the state line into Wyoming it was going for $2.23 a gallon.
Why the nearly $0.40 difference? I know they pump it there in WY, Curt was a roughneck after all. But don't they pump it in CO too? Is it a taxing difference?
BTW, in the Mountain states regular gas is 85 octane not 87. I guess at 6000 ft and more above sea level a car doesn't need 87 octane anymore.