Shoptet supports concept of product surcharges, which can be selected by a customer and apply to the basic product price. The final goods can be composed from multiple parts and options, each contributing to the final price. See more about Surcharge parameters in our help.
We have extended endpoint Product detail to return also surcharge parameters for each product, if defined. To do so, use parameter ?include=surchargeParameters. Complete information is returned in data.surchargeParameters array.