what if there were more than one types of books, with different limits of characters, different prices, and different icons. For example, one wants to buy a medium-sized book (25 000 characters limit) , which costs 150 trias. He looks on him, but finds out he don't have enough trias. If he had 125 trias, for example, he could buy a slightly smaller book (15 000 characters). And if he really has nearly no trias on him, he could buy a small notepad (1000-2000 characters). If, for example he had one circle on him, maybe he could buy a bigger book (37 500 characters), or if he had even more money he could buy a very big book (50 000 characters), or maybe even bigger book (80 000-100 000 characters).

Of course, each type of books would have a different weight (a notepad and a 1500-pages book doesn't have the same weight, don't they?), and different icons. Not only some of the books in Jayose's Librams and Codexes do not have the icon the player-bought books have, but there is a variety of book icons useable in the Art directory!
P.S.: Every numbers in this post can be changed, they were just examples.
