Ask yourself these questions....
A) if you are ok using the cheap ones, why do you care if Analog Devices products are more expensive?
B) if you really need the uniqueness, accuracy, performance, of the Analog Devcies parts, why don't the other companies offer a lower priced alternative?
C) if you could make something your customers want and your competitors cannot copy, wouldn't you want the best possible price for the preferred part? What is that called? Oh yeah, capitalism and Free Markets.
Do you also expect to get a BMW for the price of a Skoda?