Yes. Go to your Active Listings page and find the buy it now item. Click the little white box to the left then click the "actions" tab above. That will present a drop down menu with "change to auction" as one of the choices.
"Laissez-faire capitalism (AKA The Great Material Continuum) is the only social system based on the recognition of individual rights and, therefore, the only system that bans force from social relationships." ~ Ayn Rand
