Disney pin trading is the buying and trading of collectible pins and related items featuring Disney characters, attractions, icons, events and other elements. The practice is a hobby officially supported and promoted by Disney. Many thousands of unique pins have been created over the years. Pins are available for a limited time. Limited edition pins, and special pins (e.g. pins that have a dangle, pin-on-pin, flocking, lenticular, light-up, moving element, 3-D element, etc.) will cost you more. Featured Artist and Jumbo Pins cost $20+ and Super Jumbo pins cost upwards of, and sometimes beyond, $125+. Pins are frequently released at special events, movie premiers, pin trading events or to commemorate the opening day of a new attraction. Some pins have appreciated well on the secondary market and have reached prices of over US$2000 at venues such as eBay. Most Disney pins are enamel or enamel cloisonné with a metal base. The backs of each pin are very sharp and should be used with care by young collectors.