• Corrugated cardboard magnate Dennis Mehiel has chopped $5.4 million off the price of his Carhart Mansion duplex (left). The 10,350-square-foot spread, which had been listed for $34.9 million, can now be yours for a much more modest $29.5 million. [NYO, BHS]
• Michael Steinberg, a portfolio manager at Sigma Capital, a hedge fund affiliated with Steve Cohen's SAC Capital, has picked up a new apartment. Steinberg and his wife Elizabeth paid $8 million for a penthouse at 885 Park Avenue. [Cityfile]
• Clara Markowicz, co-founder of Original Media LLC and a co-producer of The Rachel Zoe Project, has paid $3.55 million for a three-bedroom, ninth-floor apartment at 21 Astor Place, the building where real estate scion Jared Kushner recently picked up an apartment, too. [Cityfile]