Mine is weird. The used bookstore, I mean. Their policies aren't posted, and I don't understand them when she explains them to me. Something about the way you trade in books is strange to me. All of the chick lit books are more expensive, which I get. ANd something about their trade value being higher. But I went in there one time with $15 store credit and chose 5 books that should have totaled a little more than $12. She added them up and said, "That'll be $2" and some change. I sighed, again feeling in the dark, and gave her the money. SHe gave me my change and said, "You have $2 balance left in store credit." I wanted to say, "What??" but I just took my change and left. I obviously just don't get it!