At our Quartzsite circle this past January, Paul Unmack and his wife Mao, with ARP, put on a presentation to our group and also installed some ARP devices. I do not remember how much he charges, but if you are not able but want an ARP device installed, this would be a great time to have it done. Becky and I will again be hosting the circle for January 2020, and in a couple months will be posting information for this coming circle. The ARP web site is here:
https://www.arprv.com/