Paul Krugman, a Nobel Prize-winning economist and New York Times columnist, has put his current apartment on sale for $599,000 while he has paid $1,700,000 to purchase a three-bedroom co-op apartment on Manhattan’s Upper West Side.

Krugman’s purchase of the six-room unit, which occurred earlier this month, has been written about by Ben Abelson of The New York Observer.  In an interview, Krugman told Abelson that he recently “came into some money,” referring to his approximately $1.4 million payout that came with winning the Nobel in 2008.  He further said that he does “expect New York prices might fall some more, but” they “need a place.”

Krugman’s new unit is in a…