http://www.nytimes.com/1995/12/07/business/40-wall-street-is...
And the building looks like this: https://www.bloomberg.com/graphics/2016-trump-40-wall-street...
It's a shady price, and a shady building, because he now rents it out to crooks like himself. (See Bloomberg piece.)
In the future, do your own research. It's just a Google away.
I bring up your Facebook comment because this is the second time you've come down on the side of the Kremlin and the conman they helped plant in the White House. It's an interesting pattern.
Edit: Responding to your comment below due to limits on nested comments on HN.
40 Wall is a well known center of criminal activity.
"Since Donald Trump took over 40 Wall St. in 1995, prosecutors have filed criminal charges against at least 29 people connected to 12 alleged scams tied to the building. Nine other firms have faced serious regulatory claims. Authorities prevailed in most but not all of the cases."
Trump also housed Trump University there, as well as Trump Mortgage, which shuttered the year before the 2008 crash. Trump paid $25 million to settle charges of fraud against Trump U.
https://www.politico.com/story/2017/03/trump-university-sett...
This isn't the only Trump property associated with large-scale crime. Trump's Taj Mahal casino was fined a record amount in 2015 for violations of anti-money laundering regulations, because it claimed to have lost records of all transactions for years.
http://fortune.com/2015/02/11/trump-taj-mahal-casino-settles...
Trump has effectively led and profited from an international money-laundering syndicate for years. He is the leader of an organized crime family. He became president of the US with the help of dirty money and dirty tricks. Much coming from Russia.