http://www.digitaltrends.com/cars/bmw-m4-gts-sold-out/
My dealer just called saying they have 1 m4 GTS available.
You will not get a chance to buy one of these since all 700 have already been purchased by dealers or individuals.
If you really want it, pm me and i'll get you in touch.
Pricing is around $160,000 - $180,000.