Coax copter

How can the coax copter be purchased?

my motors require 22.2 volts which power the esc’s can the pixhawk receiver be powered by the 22.2. volt batteries ?

does anyone know of an instruction manual for the iris+transmitter. I am trying to set up mixing of
channel 3 and 4 to vary the rpm of the two motors on a vehicle similar to the coax copter.