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HankronIn books and printing, color is substantially more expensive than black and white. Magazines like SI and Time are in color, but they print millions of copies and gets millions in advertising. With newspapers the stand price pays for the cost of the ink only (not for paper, saleries, building rent, etc etc). For publications like SI and Time, the money they make from the direct sales (stand, subcription) covers only percentage of the cost of producing/distributing the magazine.
This is why one shouldn't expect small time publications to be in full color like Time, unless one is willing to pay $30 per copy.