I have a confession: I hoard books. I know the problem is bad because my cat keeps knocking over the teetering “to read” pile on my nightstand. Over the years, I’ve gotten some books I think are pretty cool, and I became curious about how much my collection was actually worth. Through a chat with the friendly folks in the Rare Book Room at Powell’s, I got a better idea of what collectors look for and what gives used books value. When I got home, I grabbed my copy of CHOKE by Chuck Palahniuk and put my lessons to the test.