"Polonium, $22.50 Plus Tax"

From the New York Times:

Commercially, Web sites and companies sell many products based on polonium 210, with labels warning of health dangers. By some estimates, a lethal dose might cost as little as $22.50, plus tax. “Radiation from polonium is dangerous if the solid material is ingested or inhaled,” warns the label of an antistatic brush. “Keep away from children.”