Best Bargain Books is awesome! They discount most books by 60%, and they have a HUGE selection. If they don’t have what you’re looking for, they’ll order it for you, and discount it by 30%.
The downside is they don’t have their inventory computerized, so if you’re looking for something specific you have to either hunt it down yourself or ask for help. The staff is very helpful, and they have a pretty good handle on what’s in stock.
Well worth the trip!