I heard $50k for the Lange Zeitwerk. Features "jump hour" and of course in house manual wind movement with a sapphire crystal back to appreciate the workmanship. I think Platinum may be even more $$$ as it usually is with Lange.
For the horology fans, here is some in depth info on the watch
http://www.worldtempus.com/en/news/w...ehne-zeitwerk/