One of my favorite places to go and spend a few hours. Bring in old books and games, get store credit, and walk out with new stuff. Can't beat that. The prices are reasonable, although not as cheap as they used to be. Instead of getting books for a dollar or two you're more likely to pay about half the cover price. However, their selection is awesome and most of the used books look brand new.
Getting rid of the A/B trade distinction was a great move on their part, and makes it easier to trade things in and redeem your credits. Oh, and this place has one of the best teacher/homeschooler discounts that I know of. You have to fill out a form and submit proof of employment (ID badge I think). Once you do, though, you get 20% off of all of your purchases, not just those that are school related.
There is free wi-fi and a few tables and chairs scattered around. If they sold coffee I might never leave!