Update: 40% off on 4 or more is no longer valid, however you may save 30% off on 3 or more used books, CDs, or movies with promotion code 30ROCK
GoHastings.com has great Prices on Select Used Used Movies, Used Books or Used CD's. Save an additional 40% when you buy 4 or more with promotion code OHMELUCKYCHARMS. Shipping is $0.96 each for movies and CDs and is $0.96 flat-rate for books. Thanks yuugotserved
Note, excludes games and graphic novels.