Jeff Bezos, the chief executive of Amazon, is buying three apartments in a Manhattan building in a deal reportedly valued at around $80 million, according to the Wall Street Journal. And it appears he landed himself a discount.

The purchase, which includes a penthouse and two apartments below it, is located in a renovated 1912 neo-Gothic building that overlooks Madison Square Park.

The penthouse encompasses 10,000 square feet throughout three floors with an additional 5,700 square feet of outdoor terraces. It has five bedrooms, five bathrooms and three powder rooms.

The two other apartments were bought together by Bezos in May for $28.45 million and it would not be surprising if they were combined with the penthouse to make an even larger and more distinctive property, says Jonathan Miller, president of Miller Samuel, a real estate appraisal firm that was not involved in the sale.

"In Manhattan the premium is on larger contiguous space," he says. "One plus one equals two and half. By combining the three, there is additional value created."