There were 4 sales on Nantucket this past week ranging from $395,000 for a condo at 4A Mary Ann Drive with 4 BR/4BA that sold at foreclosure to $2,300,000 for 15 & 17 Head of the Plains, a four acre property in Madaket with a unique hexagonal beach house. The average selling price of these 4 sales was $993,750; the median price was $640,000 and the average days on the market was 245 days.