Marine sanitation device

I have two Electroscan marine sanitation devices. They are both new, in the box. They allow you to be USA compliant for discharging waste after ran through this device. You can view details at https://www. boatersland. com/rarelectroscan. html

They sell for $1300 each, I am willing to sell for $500 each, or best offer. My boat was destroyed by Hurricane Irma before I could get them installed.