Cheaper to produce, so the US refineries produce a lot of it and trade for gasoline or sell to outside buyers, if what I read is correct.
The whole thing is BS. Selling price should be determined by actual market conditions, not by what they think will happen. "Our cost may increase, so we need to jack up the selling price by 10% now, just in case..."?
I would like to have done that early last year, before the price of copper jumped up and caused my wholesale cable prices to almost double from one order to the next.