Pricing for production of plastic details depends from number of cores in the tool and number of produced details. For plastic injection moulding, we need to make injection moulding tool in advance. In that tool, the cores are placed. (number of details, which can be produced by one cycle). Pricing depends on how many cores the tool has and how many cycles need to be produced.
FOR EXAMPLE : If the cores in the tool are smaller amount, than the price of the tool is also lower at the expense of the price for one produced detail, which is little expensive and vice versa - if the cores in the tool is bigger amount , than the price of the tool also higher at the expense of the price for one produced detail, which is cheaper.