It's true in most luxury goods. In this case, instead of Louis Vuitton, George Ault was the brand being replicated. High-end mechanical watches are another example, where the "right" name on the dial definitely affects the demand, even if lower-priced watches have nicer internals and finishing for far less cost. In fact, there is a whole group of consumers who knowingly purchase replicated pieces (some of which are getting indistinguishable from the real thing). A lot is in a name, in art and otherwise.