In a declining market it is very likely that prices have dropped while you were waiting to close on the property.
This will help....if you are financing, banks will not provide financing if the appraisal is less than the sale price of the property.
This protects both them and you from being partners in a home ownership that is not worth the present market value at closing.
The best advice I could give you is... Ask your agent. He or she should be able to tell you that information. From 10/31/08 to present threre has been a decline in prices all over the Manhattan area. Now I am not saying that your apartment took a hit because:
I don't know the property you purchased
I dont know what you purchased it for
I dont know what the current comps are in the building.
All the Best