The Voigtlander Nokton 50mm f/1.5 Aspherical II MC lens for Leica M-mount is now on sale at B&H: $200 off for the silver version and $250 off for the black version. The full list of discounted Voigtlander lenses for Leica M-mount can be found here.
At Amazon, both versions are priced at $699 (see all discounted Voigtlander lenses here):