http://www.innobits.com/~innobits/sales/corcoran/corcoran.html
The Corcoran Group specializes in the sale of luxury co-ops and codominiums in Manhattan. There is an extensive list of links to properties for sale in New York City. The links are organized by area, number of bedrooms, and type of residence. Prices range from a couple of hundred thousand dollars to millions. The Corcoran Report, an in-depth semi-annual pubication of a Survey and Analysis of Conditions and Trends in the New York City Luxury Co-op/Condominium Marketplace is also available here.