Merchandise prices can get very specific--each variant of merch item can have its own price.

Before this change, you couldn't do an ad hoc price override on an individual merch variation--so if the XXL hoodie was $5 more, you couldn't do an emergency discount on that price when selling one.
Now, well, you can.
You just add mech to the cart in the Box Office and press the
button.

Change that price to a lower price and press Apply.
