The most famous party house in the world — the Playboy Mansion — is said to be going up for sale. The asking price? A hef-ty sum.From the sky, or on the grounds, the Playboy Mansion is the picture of elegance. But for decades, the insides were less than stately.Hugh Hefner bought the Playboy Mansion in 1971 for $1.1 million. Now, Playboy Enterprises is said to be looking for nearly 200 times that much.