Which property are you referring to? In your question you are asking about Harlem, yet the link you provided is for a Condo building between 81st and 82nd streets, Price Upper East Side area not exactly Harlem.
The apartment on the above link is priced at $8.5Million. Going by previous sales in that building if there is a buyer for this apartment it will probably sell for under $8M.
Is this the property you are talking about?