What’s a cardboard box worth? A quarter of a million dollars if it houses a rare set of Andy Warhol’s Marilyn Monroe screenprints—at least according to one art dealer. Just such a cardboard box is at ...

While headlines suggest a slump, the art market is expanding thanks to young collectors and prints priced under $50,000. Kevin Czopek/BFA.com The medium itself is also shifting. Paintings—still the ...

At first glance, it looks as if someone confused the package a work of art came in with the art itself. It's just pieces and panels from ordinary cardboard boxes, scarred from shipping, still bearing ...