The super rich don't seem to be losing their appetite for trophy properties—especially in New York.
Sales of apartments priced at $10 million or more surged 75 percent in the third quarter, according to Brown Harris Stevens. The surge in super-expensive properties pushed up the average sales price 8 percent from the third quarter of 2012, to $1.45 million.
(Read more: Apartment demand keeps climbing)
The median sales price was less affected by the boom at the top, rising a more modest 3 percent to $870,000. But the median price is now the highest in four years.
More broadly, inventories are starting to rise in Manhattan, leading some to call for a slowdown in prices. But Brown Harris said average selling time is now 77 days—down 29 percent from a year ago.