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• Flavio Briatore, the Italian mogul, racing car enthusiast, and Heidi Klum's baby daddy, has dropped the price of his penthouse at One Beacon Court. The 4,485-square-foot condo, which Briatore put on the market for $25 million in September 2008, is now listed for $23 million. Meanwhile, his apartment at the Plaza is still available as a $65,000-a-month rental. [Cityfile, Domus]
Brett Gorvy, co-head of post-war and contemporary art at Christie's, and Amy Gold, Christie's director of business development, have paid $3.45 million for half of Abigail Disney's co-op at 300 West End Avenue, which was divided in two. The couple sold their former apartment at 470 West End Avenue for $2.175 million back in June. [NYO]
• Columbia Grammar and Prep, the UWS private school, is in expansion mode. Psychiatrist David Leibow and his wife, Sandra, sold their brownstone at 32 West 94th Street to the school last month for $7.15 million. The school paid $6.15 million for another brownstone on the block last summer. [NYT]

• Broadway actress Judith Ivey and her husband are looking to unload their five-story Upper West Side brownstone for $5.995 million. [NYM]
• The North Haven mansion of late advertising executive Phil Dusenberry has gone up in price since hitting the market for $18 million last month. The 11-acre estate is now listed for $25 million. [Curbed, Corcoran]
• Aja Steindler, a former champion ice skater (and a bridesmaid at Ivana Trump's most recent wedding) has put her 22-foot-wide home at 313 East 58th Street on the market for $4.7 million. [NYT, Bellmarc]