It looks like Google co-founder Sergey Brin and his wife Anne Wojcicki are planning on spending more time in New York. A month ago, we reported that Bill Brady, the head of Credit Suisse's technology banking practice, had sold off his duplex penthouse at 744 Greenwich for $8.5 million. Now it seems the buyer was none other than Brin and his genetics-loving wife. Earlier today Real Estalker mentioned it had received a tip that the tech billionaire was behind the purchase. When we checked the records, we noticed that the buyer, Moore LLC, shares the same address in Menlo Park, CA as Brin's private foundation. So what is the couple getting for their cash? Some 3,457-square-feet of living space, four bedrooms, limestone bath with heated floors, and a master suite with a 23-foot balcony. You can gaze at the photos yourself here.