What I like about these books is that they contain a lot of great children's literature, all in one small volume. Rather than collecting a lot of different books, this takes the guesswork out for you. The books also connect to other subject areas when applicable like science or social studies. And, there is a wide variety of genres, from poetry, to fiction, to non-fiction pieces.
Each volume is 43.87, and I believe that both volumes are meant to be done in one year's time. We only do Reading Street once a week, and the kids like to look at it on their own as well, so likely it will last longer for us. The upside is that even when you are done doing the activities, you still have an anthology of great literature to go back to whenever you like. See what my crewmates think by clicking here.