I can offer a product for sale at any price, and if it doesn't sell I am forced to lower that price until it does.
If people are willing to pay $20 a gallon for gasoline and I have that gasoline, I should, in a free country, be able to sell it at $20 a gallon. That is how it is supposed to work. Except the USA is not a free country; the government has to control everything. And don't tell me people have to have gas. They don't. They may have to find other alternatives, like car pooling and taking a bus instead but they will still be alive at the end of the day even if they can't afford to fill their cars.