Product classes:
Once you have set up your product, it is then possible to define classes for the product. This might be the type of seats sold, for example adult or child.
It might also be a window seat carrying a higher value than an aisle seat.
The price per seat is defined at the class level depending on those classes that are defined. This price is the rack rate for the service before any commissions or discounts.
Discounts and commissions are applied to individual bookings when they are made
