Special edition  The terms special edition, limited edition, and variants such as deluxe edition, or collector's edition, are used as a marketing incentive for various kinds of products, originally published products related to the arts, such as books, prints, video games or recorded music and films, but now including clothing, cars, fine wine, and whisky, among other products. A limited edition is restricted in the number of copies produced, although in fact the number may be very low or very high. Suzuki (2008) defines limited edition products as those “sold in a state that makes them difficult to obtain because of companies limiting their availability to a certain period, quantity, region, or channel". A special edition implies there is extra material of some kind included. The term is frequently used on DVD film releases, often when the so-called "special" edition is actually the only version released. Collector's edition may just be another term for special edition and limited edition products that include additional features or items that regular versions do not have. Speaking about books, collector's edition products may refer to books in special limited and numbered editions, sometimes hand-bound, and signed by the artist and containing one or more original works or prints produced directly from their work and printed under their supervision. Whatever these extra features or items are, they must represent additional value to collectors of these products. Popular culture widely employs "Special, Deluxe, Expanded" and "Limited Edition" in marketing, releasing subsequent, improved versions of film DVDs, music, and video games. Companies widely use special editions and incremental improvements to sell the same products to consumers multiple times. This has been seen in the "10th Anniversary edition" of "Titanic", which simply consists of the first two discs of the previous "Special Collector's edition", only with new packaging, and on CD with the "30 Year Anniversary Edition" of Bob Marley's "Exodus", which has exactly the same content as the original album, but in new packaging. In many cases, successful film releases have had items made in limited numbers. These "limited editions" usually contain the best DVD edition possible of a film with special items in a box set, sometimes containing items available only in the limited edition. Items marked thus are often (but not always) released for a shorter time and in lower quantity than common editions, often with a running number (e.g. "13055 of 20000") printed on the products to boost the rarity feel, as the company implies not to manufacture more.