Microsoft Building 92, 15010, Northeast 36th Street, Microsoft West Campus, Overlake, Redmond, King County, Washington, 98052, United States
Microsoft
PCMag (via Fox News[1], 29 February 2016): "The device will start shipping to developers on March 30"; Wikipedia[2][3] records that it shipped on March 30, 2016.
Microsoft began shipping the HoloLens Development Edition on 30 March 2016 at a list price of US$3,000, first to approved developers in the United States and Canada.
$3K