Hi.....The only way to get a low cost PCB and I am assuming that the PCB is 2" square is to either make them your self. Overseas is really not an option since they like to make PCB's in volume, large volume. Assembly is another issue, since it will probably cost you more than $2.00 per board, even if you supply the parts. It is really to low of a volume for automation.If you are looking for the best value for prototype PCB
's, I have found and use on a regular basis is 4pcb When you run their $33 (2 layer upto 60 sq-in) or $66 , you get a good deal.