Ah, but foul is in the eye of the beholder. Is it foul if it's standard practice on both sides of the pond? Certainly the consumer has been subjected to it continuously, so it's not a quick switch. The price in the previous 28 days is a nonstarter when it comes to produce as that's a constant supply/demand variable.
And don't forget, "If you are too hurried, lazy or stupid to do the math" is coming from a mathematician.
