Japanese anime, books, and memorabilia isn't cheap, and you'll pay a pretty penny at some of the more well established outlets like Kinokuniya. Unless you hit the conventions or eBay, you won't be getting much of a bargain. That is, unless you're in Costa Mesa and stop at Book Off in the Marukai shopping center. Book Off's got a large selection of new and used j-pop, CDs, DVDs, literature, and lots of anime. One row is now dedicated to English language books, and while their selection is a bit eclectic, it's quite a bit cheaper than its competitor across the street. Book Off is open at 8:00 seven days a week, and if you're a big fan of all things Japanese, you'll want at least an hour to browse the collection.