Sales at One57 and 432 Park Avenue, amplified examples of a phenomenon, indicate that we are without a doubt, experiencing a residential real estate high. Extell Development's famed One57 sold a penthouse for a record-breaking $90 million, though the building now barely holds onto its "tallest residential tower" title in Manhattan. 432 Park Avenue, which will claim One57's short lived title, has submitted a plan to increase asking prices for its condominium units to $5,800 per square foot, but given the most recent examples, developers have no need to be cautious before instituting a double digit price increase three years before construction is complete. Manhattan condo prices continue to climb as steeply as the megastructures themselves, and even a $5,800 per square foot condominium will sell itself.