Mikhail Baryshnikov is selling his New Jersey home. “He has lowered the price on his 4-acre suburban retreat to $8 million from $9.5 million. The Palisades, N.Y., property, which went on the market in January, includes a 3,900-square-foot main house that dates to the 1870s. It has five bedrooms, 41/2 baths, a great room and sauna. “