Yes. I don't think there's a provincial tax in Canada on reading material right now. If there was, it was for a short period of time, so we can't measure the effects of the retraction of it.
As far as the GST goes, I can tell you that on behalf of the students at Queen's University, they thank the government for a savings of approximately $80,000 a year on their textbook costs as a result of the decrease in GST.