public void PriceChangeDependOnThePlanentQuentity() { //each planet has 20 avilable resorses //the price for sell or buy vary depend on the quantity of the planet has //simple calculation is price of the resorce + 1 - price of the resorce*(planent quantity /20) int GetPriceResorceID = 2; eco.BuyingingPrice(GetPriceResorceID); }