Discount Tiffany-style lamps are available online from stores such as Lamps Plus, Amazon.com and Overstock.com for a few hundred dollars. Genuine Tiffany lamps, which sell at auction houses such as Fontaine's Auction Gallery, fetch several thousands of dollars to over $1 million per lamp.
Most lamps branded as Robert Louis Tiffany or "Tiffany-style" lamps, are replicas that employ manufacturing techniques created by Louis Comfort Tiffany during the early 1900s. Genuine Tiffany lamps almost always have an aged, hollow bronze base with a heavy lead ring inside, glass that contains speckles or changes color when lit, and a stamp on the base that reads "Tiffany Studios New York." Modern Tiffany-style lamps may display colorful stained glass shades, but these lamps use a variety of materials for the base and may be original designs manufactured by modern glass houses.