There are many websites where you can get details on lease rates. I suggest, a website where most of the people now a days are looking for lease NY and the prices of the lease, compared to others, are really less and you can get benefited from them.

Lease rates vary by location even within one city as some neighborhoods are better than others. You need to compare your lease rate to other similar apartments for rent near the subject property. This determines the "going rate" for that neighborhood.

Dont understand the question. Why cant you ask a broker to give you a sample of rental prices in NY.

NY is a very big state and rates vary greatly from one area to another.

Try Rentometer.com.