Something weird happened here in Jacksonville, Alabama yesterday afternoon. All the gas stations suddenly raised prices on average about 8 cents. Today, a couple dropped them back down, but most are still up the 8 or so cents. Don't understand the danged gas/oil pricing thing at all.
Unlike most business that set the price based on the purchased price, gas stations set the price based on the cost of the next 10,000 gallons they will have to buy.
Those prices are determined by the refiners.