Are painters out of ideas?

Art forgery has taken center stage this month at the Knoedler trial, which, prior to its surprise settlement, had been tasked with sorting out who did or did not knowingly sell fake de Koonings and Rothkos to unwitting collectors. But while these high-end, high-profile scams keep coming to light, a different group of collectors have been snapping up artworks that are very similar to those of master painters such as Joan Miró and Robert Ryman—and even young art stars like Joe Bradley—at a fraction of the cost.