With prices averaging $18.75 million, the 96 condos in the soon-to-be converted Sony Building are going to be mindbogglingly expensive. But the penthouseoh, the penthousethat will be record-shattering-completely-inexplicable-make-you-weep-and-lose-your-mind expensive. The Real Deal reports that the apartment will list for a whopping $150 million. It will measure 21,504 square feet and occupy the top three floors of the 37-story building. According to the offering plan filed with the Attorney General's office, the place will have eight bedrooms, eight bathrooms, and 10 powder roomsin other words, it will have 18 toilets.