Insert mold cost is affected by various factors, such as: the complexity and size of the part; the number and type of inserts; the material selection; the mold design and construction; the production volume; and the labor and overhead costs. To reduce insert mold cost and increase efficiency, you can adopt some strategies, such as: simplifying the part design and reducing unnecessary features; choosing standard and compatible materials for the inserts and the plastic; optimizing the mold design and layout to minimize waste and maximize productivity; using automation and robotics to reduce labor and cycle time; and implementing lean manufacturing principles to eliminate waste and improve quality.