I was at a second-hand book store years back and it advertised itself as purveyors of the finest literature. Of course, in the process of purveying such literature, someone made a decision as to what qualified as literature. I expect some collectors are 'better' than others, although the meaning of better in that context will likely mean different things to different people, perhaps dependent on what they intend doing with the product or their reason(s) for reading the stuff in the first place.