It was just last week that we put together a handy map of the 25 most expensive listings on the Cape & Islands and it looks as though we'll need to update it sooner rather than later. Nantucket's fourth priciest listing, 33 Squam Road, hit the market in June for $22,950,000 and has already found a buyer. The waterfront compound features a main house with a rather awesome media room, cottage with a separate driveway entrance, and a two-car garage with studio. [previously; Great Point Properties Facebook]