1) Board size: The size of the board greatly influences the cost of a PCB. Larger boards require more material which means higher production costs.

2) Layers: The number of layers a PCB has is another key cost factor. PCBs with more layers require more time and resources to produce increasing the cost.

3) Material type: The type of material used to manufacture the board also impacts its price. Different materials have different properties, and some are more expensive than others.

4) Copper weight: The copper weight, or thickness, of the PCB influences price. Thicker copper layers require more material and time to manufacture, leading to higher costs.

5) Trace and space width: The width of the traces and space between them on the board can affect the final cost. Smaller widths require more precision during the manufacturing process, increasing the price.

6) Surface finish: A PCB's surface finish affects both its functionality and price. Different finishes have different properties, and some are more expensive than others.

7) Drill holes: The number and size of drill holes in a PCB can also contribute to its final cost. Smaller, more precise holes require advanced equipment and expertise, which can increase costs.

8) Quality requirements: PCBs designed for high-reliability or critical applications may require extra testing or certifications, which can increase the cost.

9) Quantity: The number of PCBs ordered also influences their price. Larger quantities can allow for economies of scale, leading to lower prices per unit.

10) Lead time: Short lead times require manufacturers to prioritize production and devote more resources to getting the boards made quickly, which can result in higher prices.