Manga-Collected Volumes:- After a series has run for a while, publishers often collect the episodes together and print them in dedicated book-sized volumes, called tankōbon. These can be hardcover or more usually softcover books and are the equivalent of U.S. trade paperbacks or graphic novels. These volumes often use higher-quality paper, and are useful to those who want to "catch up" with a series so they can follow it in the magazines or if they find the cost of the weeklies or monthlies to be prohibitive. Recently, "deluxe" versions have also been printed as readers have gotten older and the need for something special grew. Old manga have also been reprinted using somewhat lesser quality paper and sold for 100 yen (about $1 U.S. dollar) each to compete with the used book market.