Within five days, I have sold the four books I listed on Amazon Marketplace. Given that it is the beginning of the semester for most programs and students have decided whether they want the books for the classes is a good part of the quickness of sales.
All but one of my books were purchased new by me (not by choice, but that profs were using new books or editions) and did not have dog-ear corners or writing in them. I listed them as used, but like new and priced them just under the already lowest price, which ended up being just under the price I paid for them. I’m guessing the other higher prices were campus bookstore-like enterprises since they tend to price high.
Even after Amazon’s cut, I ended up getting more than I would have if I sold them to students on my school’s listserv because others had already priced theirs low and I did not think I would get my higher price. I was slightly annoyed when I found out some of the profs were not using these editions anymore so no one from my school’s listserv were going to buy them, but it led to an alternatives means for selling them. I’m glad it worked out this way!
Veering from textbooks, I was looking on Amazon for reviews of this workout DVD I bought because it looked interesting, I had a gift card and it was the cheapest one at $12.99. One used copy is available on Amazon Marketplace for $79.99(!!). I do not remember there being another copy, but if I thought there was I would go back and get it and list it for a lower price and see what happens!