Where to buy?

VKB North America (via VKBcontrollers.com) serves customers in CONUS* and Canada.

Listed below are official VKB partner sites that serve other regions:

 
*CONUS = the 48 contiguous states of the continental US, excluding all other off-shore insular areas, such as American Samoa, U.S. Virgin Islands, Northern Mariana Islands, Guam, and Puerto Rico.