Let me know and I will try to contact him. He's on a german forum I no longer visit so I'm not sure I will get him.....maybe via someone else from that forum
I've bought a board from that guy in the past. He usually does exchanges only (your defect PCB plus EUR 150.-, so it's not just the cash he wants). The first boardset I received from him in that deal was dead on arrival, and it took some discussions and another 6(!) months to make him send me a working one instead (he kept claiming that it was my fault, as I was still using the original AR2s, and not a switching ps, even though my ARs were rebuilt and delivering perfect voltages, and there was no sign that the problems where power-related in any way).
On the other side, the boards I received in the end are working to this day (with the very same AR2s that he spotted as the root of all evil beforehand
).
So, IF you go that route, just make sure you agree on every aspect beforehand.
Cheers,
Martin