Just looking at Austin area I was pretty surprised to see that the price varied from $3.89 to $5.39 between South Austin and Round Rock (North Austin). But also

Just looking at Austin area I was pretty surprised to see that the price varied from $3.89 to $5.39 between South Austin and Round Rock (North Austin). But also even a $1 difference from McDonalds in Round Rock on opposite sides of the free way. I don’t really eat at McDonalds but surely people who do would notice these kinds of differences right away.