The sprawling Hamptons estate owned by Alec Baldwin is back on the market for a noticeable price increase. The Emmy Award winner has relisted his Amagansett mansion for $21 million, about $2 million more than he was seeking last year, according to Mansion Global. Baldwin, 67, has been trying to sell the property described as boring and compared to mayonnaise by comedian Dan Mahboubian Rosen for more than three years.