Burning boards have ~320 parts and pnp machine handles ~22000cph. So ~70 boards per hour. He can handle over 10000pcs avalons in normal 8hrs workday. But broblem arise from postage. It takes lot of time to pack boards and post to many customers. If average order is ~200 avalons ~10boards it means 50 pack/post per day. And he is alone and have other work too. But if things gone well he handle all orders in week.

Burning test pcb bottom are full painted. Orginal avalons have solder square in every chip locations. I think solder is better heat conductor than paint. Maybe he corrected it production boards..?