Look for shows sales that specialize in remaindered books. Annual shows in Atlanta, Boston and Chicago specialize in remaindered books and draw thousands of people. If you can't make it to a book show, contact the organizers to see if any booksellers from your area are attending.
Look for stores that specialize in remaindered books, such as Book Warehouse or Books-A-Million. Larger chain stores, such as Borders or Barnes and Noble, also often have shelves or tables with deeply discounted remaindered books. Ask your local bookseller if they know about any nearby stores that offer remaindered books.
Browse the Web for online stores that specialize in remaindered books, such as Daedalus or Hamilton Books. Although you can sometimes find excellent deals online, be aware shipping costs are likely to be prohibitive if you're buying remaindered books in bulk.