set up a 3rd bundle option, which hides the "base" price and simply uses additive item values. No price labels the bundle "free"
If General, Senior and Youth tickets each had a drop-down for dates, choosing dates for a performance, specifying quantity and having the cart simply add up the values would simplify setting up mobile pages.
As it is, using a bundle label of "free" causes problems, and using the highest price with discounts, or lowest price with premiums creates extra setup and forces ticket prices that cannot not stand alone
