The pit price is coal success plus three funds and resource tax (13% value-added tax).
The price of car board is subject to pit price plus freight (if it is transported by train, it includes railway planning fee and taxes on some platforms in Shanxi). If it is clean coal, the cost of coal washing should be added, including the conversion of clean coal recovery rate.
The most difficult thing to calculate is taxes and fees, which vary from place to place.