Jlcpcb offers 5 pcs of 100x100mm board for $2 plus $17 DHL 3 day shipping. You will have your boards in about 7 to 10 days in the US.I am interested, visitor.
who offers that kind of pricing?
they do boards up to 400mm x 500mm. No extra charge for vias, or your own panelization - they do charge a nominal fee if you have many hundreds of slits, mouse bite panelization, ...
also, you can combine multiple PCBs in an order and pay only the incremental weight.
jlcpcb,com. They process 10,000 orders per day! You can monitor your order manufacturing in real time.