Some events may have price types with a discounted price, such as student, child or accessible tickets. It is up to each individual organizer which discounts they wish to give or use for their event.
Tickets can be checked at the entrance of the event. You must be able to validate that you are eligible to use the specific price type. For example, a valid student ID will be required to use student tickets.
There may also be cases where the event has a price type that requires a code. This code is usually provided by the organiser, or a partner of the organiser. For example OBOS.
Check the event in question to see if there is a discount that suits you.