You seem to have neglected something economists call supply & demand,however, new economics always wants to find other explanations, than the real ones. We live in a global economy, and your analysis is parochial & shallow.
Gas Prices Rise, but the Industry Approaches Growth Stagnation [View article]
Of all the refiners, look at HOC which has very low material costs becasue of their ability to process sour crude and black way crude, which they obtain at significant discounts.......additi... there Western refinery location and markets have better domographics [longer driving distances on average].
3 Aspects to Pricing Oil [View article]
Gas Prices Rise, but the Industry Approaches Growth Stagnation [View article]