Seconding this. At the top end of the range, about $150 / each if you buy 15 of them at a reputable factory. Half of that is components, a tenth is the PCB, rest is assembly.

If you are going to hand-assemble a macropad or something, you end up paying more in shipping than you pay for a set of 5 PCBs.

Also, most factories allow you to calculate the price on their website! Look for PCBway, Elecrow, JLCPCB, OSH Park, or a dozen others.