Well that's good to know that the VACD cards do not have a high failure rate. Hopefully the "used" replacement will last.
It has been up and running for a week now and it seems fine.
I have one issue with a dead camera. I need to check the cable first. It is a long run to the front of the property. I can hear the Camera motor running so I at least know that it has power.
But that's for another day....