Interface DiscountedPrice

ProductDiscount related to the discounted price.

Money value of the discounted price.

- When a [relative Product Discount](ctp:api:type:ProductDiscountValueRelative) applies and the fractional part of the resulting discounted price is 0.5, the discounted price is [rounded half down](https://en.wikipedia.org/wiki/Rounding#Rounding_half_down).

  For example, a price of €1.01 (`centAmount: 101`) with a 50% discount (`permyriad: 5000`) calculates to €0.505. Since the fractional half-cent is exactly 0.5, it rounds down to €0.50 (`centAmount: 50`).

- When an [absolute Product Discount](ctp:api:type:ProductDiscountValueAbsolute) exceeds the price of the Product Variant, the resulting discounted price is set to `0`.