Well, yes, although glossy pages create some extra impact. However, if the book in question is one which will be kept for a while, actually read or referred to

Well, yes, although glossy pages create some extra impact. However, if the book in question is one which will be kept for a while, actually read or referred to, perhaps it is a more worthwhile endeavor? Compare that to the other end of the spectrum, e.g. supermarket ads, most of which do not even leave the plastic bag which carries them into someone's front yard and straight into the trash.