Ticket prices are set and unchanging, but the amount a customer will pay in the end depends on if they are buying tickets online, or at the box office with a card or with cash. There is a way to make it so each of these methods of purchase will end with the customer paying one price.
The current way to produce this effect is to create different ticket price levels for different methods of purchase. For example, let's consider a ticket they can be bought on-line for $10.
A $10 ticket will incur fees of $2.10 for a total cost of $12.10. This means that two other ticket price levels must be created so that both box office methods of purchase will reach the same customer cost of $12.10. In this case, a "Card at the Box Office" ticket for $10.80, and a "Cash at the Box Office" ticket for $11.10 will give the desired results.
How to calculate different ticket types
These kinds of calculations can be complex so we have a sheet you can use to make these calculations. You will be able to see what the fees are for a given ticket price, as well as what the ticket prices would need to be for a given final cost. In the case of the $10 ticket (see image below), enter the $10 "Ticket Price" to discover a total transaction of $12.10 and then enter that $12.10 to discover the ticket price required for using a credit card or cash in the box office or "at the door".
Be sure to mark "at the door" or box office ticket price levels as not available to sell on-line.