They are not "fair ", when buying books. I went to three locations and all three ask you to leave your books and go look around. Don't!
They give you .25 per book! And then sell for 1000% mark up!
Go inside and look around first, price out the books that are similar! Then you make them a counter offer! Otherwise! Just trade your books with friends! As you basicly end up giving them for free! They are theves!