The goods' unit price for a class at qty units: price and price before campaign. Null when the class has none. A class with tiers takes the ladder's step for the quantity, as the cart does.
qty
tiers
The goods' unit price for a class at
qtyunits: price and price before campaign. Null when the class has none. A class withtierstakes the ladder's step for the quantity, as the cart does.