My work is conceived and executed in a limited number edition, or as a unique painting on paper called a monotype. The numbering of each edition is made up of a fraction: the individual print number over the total edition size, e.g. 6/25 which means the print is the sixth print of an edition of twenty-five. A Varied Edition or Edition Varié (EV) is an edition in which I purposely make changes in color or change the paper from print to print. My prints are multi-originals, owing to the nature of the graphic processes. I sign and number each in pencil and once an "edition" is complete, no others are printed.
It is not the medium, however, that creates a work of art. It is the aesthetic intention of the artist that gives a work its value. In addition, an editioned print need not be technically perfect to be of artistic merit.
Start with something that appeals to you. Collecting is a personal experience for your own enjoyment and enlightenment. Buy works because you love them. If they appreciate in monetary value consider that an unanticipated consequence. Let your dividends be in terms of imagination and spirit.