Except they're always quick to raise the price but slow to bring it back down.
Apple does the opposite sometimes though, speaking of slow to raise, the iPad Air 2 starts at $499 is the US and $549 in Canada, with the current exchange rate, the Air 2 should be over $720 dollars in Canada. Canadians quite a discount on the Air 2, technically the price should have been adjusted quite a while ago. And I'm sure this is true in other regions/for other products to some extent as well.