In order to change the ticket price on a reservation order, you need to go to the order page (see instructions here).
You can change the price of a ticket reservation by selecting another available discount for this ticket in the ''Tickets'' table.
If you mouce over the price of your ticket, you can see the available prices based on your pricelist and you can choose another price.
Attention:
Do not edit reservation orders made online before contacting the customer.