There are several factors which make the collection of multiples of contemporary art a leisure activity. Some are shared with the tout court art collecting, such as belonging satisfaction, beauty’s sake, social and cultural esteem and are given by the collection of items result of genius and creativity. Some others are more specific, as usually multiples are cheaper than those unique artworks of the same authors, such as paintings and drawings. These last ones let people afford art collecting although they are not such wealth owners. But where to start from to get multiples of contemporary art together?