This post was written by guest blogger Andy Fine.
here are a couple of explanations for this. First, an active used book market means that newer books have a higher resale value (effectively allowing people to estimate how much it costs to “rent” a book). Secondly, it turns out that many people simply don’t view used books as a substitute for new books. That is, many people only buy used books or only buy new books. On top of all of that, giving customers more choice tends to increase the overall size of the market, whether by giving them more reasons to come back or by introducing them to something new that encourages them to buy more.