Ingredient prices can vary wildly, even outside of inflationary periods. Customers also prefer prices to change rarely, so the only option left is to change the

Ingredient prices can vary wildly, even outside of inflationary periods. Customers also prefer prices to change rarely, so the only option left is to change the pack size and/or reformulate. Eg cocoa prices varied from 3,300 USD/T to 2,000 USD/T in 18 months. Sugar nearly doubled in the last 3 years. A product released at one point would not be economical at another. Of course, if you are not price conscious then you can mostly avoid these issues by buying the most expensive of everything, but you're talking frozen pizza here...