Big Ticket: This Month’s Top Sales in New York City

Didion’s estate has finally gone into contract on her apartment at 30 East 71st Street, more than three years after her death. It has four bedrooms, plus a library, home office and staff quarters. The sale price and buyer aren’t yet known, but the most recent asking price was nearly $5.8 million. The co-op was first listed a year ago for $7.5 million.