That's just sticker price, many of those cars get sold at a a minor price premium to a ~30% discount.

Which is why the monthly sales are all over the map:

http://carsalesbase.com/us-car-sales-data/porsche/porsche-pa...

  2016
  January 336 February 293 March 334 April 371 
  2017
  January 35 February 28 March 554 April 1098  <Likely discounts