Nema 23 Brakes for servo or stepper motors

I'm looking for a new or used Nema23 servo/stepper motor brake 24VDC
bolt on type. I have ball screws on all three axes on my router and I
need a Brake for my Z-axis. Inertia Dynamics, Electromate and MCG
sell them for up wards of $210.00, this seems a bit high for something
so simple. Do any of you have one you can spare or an alternative
source for these brakes? It has to be similar to the ones from the
companies I mentioned because I need to mount it between the end of
the ball screw and the bottom of my motor so I can mount the encoder
on the top of my motor. Any leads or help would be greatly
appreciated.