I don't know why so many people are complaining about the selection here. I stopped by here looking for a few things to read on a long flight, and I walked out with a collection of poetry by Andrew Motion, a Zelazny SF classic, and some stuff by Mill (On Liberty, The Subjection of Women, and Uitlitarianism), for $9.
My only complaint is that their inventory isn't hooked up to amazon or abebooks, so you have to go to the store to see what they have. Well, that, and someone I knew from high school works here now, and I don't think she recognized me (sadface).