I know this question might get closed because of being opinion depended but I couldn't find any answer from google or any other search, so I decided to ask it here.
For clarity of question I want to link this Nexys II board just as an example.
For PCB manufacturing, prices per board drops sharply at low volume intervals(when you double the quantity price per board) as the graphic below. So PCB manufacturing becomes feasible after a couple hundred of production. For example a 10cm x 10cm, 4 layer PCB costs ~8$ per board(with other settings default) at pcbwing.
But Quoting for PCB assembly seems way expensive in those production levels and I couldn't find an online quote website for high volumes to see when cost is feasible per board.
So my question is, approximately at what quantities I get similar price per board graphics for PCB assembly costs(for boards like Nexys II) ?