Dang Dang and Amazon were major online book distributors.
After 2007, it became common for middle school students to buy books online from Dangdang (click link to see site as of 2008! and Amazon (as of 2008 was called Joyo Amazon) , one of the benefits was payment upon delivery. Delivery personnel would send in the books during lunch break; we'd not take lunch to pick up the books at school gate. One of the series that we ordered was Complete Works of San Mao. We each contributed a small sum for Li Yuxian's birthday. Once Da had a strange remark, "Did you ever notice that, if you take the exam right after finishing up a book, there be a high probability of getting high scores?" These are classmates from grade 10, after we took up grade 11, we had less time to read.