Local libraries hold book sales this time of year. You can get paperbacks for 25-50 cents, and hardcovers for as little as 50 cents! Call libraries in your area for more information.
Pawnbroker.com (http://www.pawnbroker.com) sells used items from a network of pawnbrokers. Categories include: Jewelry & Gemstones; Antiques, Art & Collectibles; Cameras & Optics; Sporting Goods; Musical Instruments; Electronics & Computers; Tools; Coins, Bullion & Stamps; Vehicles; and Miscellaneous.
An interesting feature is "FreeFall," where prices on some items continuously go down; for example, $1 every hour. You can buy an item at its current price, or wait for the price to go down--but you risk losing the item to another buyer. The price of a FreeFall item drops until the item is sold - there is no reserve price. Unless someone buys the item, the price will drop to a penny.
All items purchased on Pawnbroker.com may be returned within 10 days.
Find real life pawnshops at http://www.pawnshop.net.