It's a conspiracy! The big oil companies are over-charging for Diesel. What used to be a crap 'by product" of gasoline refining has turned into a huge cash cow for big oil! How in the heck do they get off charging the same price for diesel and premium high octane unleaded?
So the Chinese bump the unit price to cover their rising cost of labor, then the ship charges more for the container that gets loaded on which of course burns more expensive bunker fuel. Then it gets off loaded and sent from the port (mostly on the west coast) and shipped via truck to Florida. Then a guy in California wants it, so it gets shipped back across in another truck, then it's trasnferred to a smaller truck to be delivered.
So the conspiracy you ask? Simple, make it so darn expensive to get something made in China and shipped in circles that it actually makes sense to make it in the USA!
Genious!!!!!