A condo at Extell Development’s One57 hit the market for a whopping $90 million.  Residence 64, which was listed on Tuesday, spans a full floor at the Billionaires’ Row supertall. The seller, shielded by an anonymous entity, combined two units purchased for a total of more than $46 million.  The apartment is among the three […]

This article originally appeared on The Real Deal. Click here to read the full story.