I live in New York City. I am moving to another state soon and want to terminate my lease; I have just finished one year of a two-year lease. My landlord has informed me that I must pay "liquidated damages" in the amount of one month's rent to terminate the lease. There is no liquidated damages provision in my lease, and I have already found a substitute tenant who earns a substantially higher income than I do and who has a good credit history. Is this liquidated damages provision legal?