Art sculpture and castoffs. Junk or Art?

When is art statuary a pile of junk and when is it valuable art?
"Organized by René Paul Barrilleaux, McNay’s Chief Curator and Curator of Art after 1945, New Image Sculpture assembles works by emerging and mid-career artists who freely appropriate from art history, ethnographic artifacts, fashion, folk art, hobby crafts, popular culture, and the world of do-it-yourself. These artists transform widely available materials, many found on the shelves of hardware stores and building suppliers, into fanciful re-creations and interpretations of ordinary and mundane things. Styrofoam, corrugated cardboard, and duct tape replace marble and bronze as primary materials, while ersatz tractors, musical instruments, sofas, and suitcases take the place previously held by portrait busts or minimalist cubes." Yatser

So what do you think? Do fancy words and warm fuzzy feelings make these items art? Or does the artists brand name bring them up to spec? What do you think these would sell for in a gallery?