Arundel Books has a good selection of used books, most at reasonable prices. Of course, as with any used book store, finding exactly what you want can be a matter of luck. It is really a better place to browse and find books you didn't even know you wanted than to search for a specific title. One thing I found a bit aggravating at Arundel Books is that they mix in new books with the old so you never quite know whether you've found a bargain or not without checking the price of each book. Overall, however, it's an enjoyable place to spend a lunch hour browsing.