Concessions-only deal example: Small Popcorn free, Medium or Large Popcorn discounted by price of Small Popcorn

In this example, a customer can get a free small popcorn, and medium or large popcorns are discounted by the standard price of the small popcorn.

This means the customer can pay the difference between the standard price of a small and a larger size to get a medium or large.

Using this method of discounting rather than specific amounts means that offers can remain in place even when the standard prices change.

Screenshot of the Promotion/Discount form: