Would take too long cuz I wait till school has started so I don't buy any books that I don't need. But sometimes like this semester I needed to buy two books brand new because we were only allowed to buy brand new becayse cuz it had a special internet access code for class. If I would have bought a used one(which I could have) I would have gotten an access code that has already been used or not gotten one at all, either way it wouldnt have worked.