The 5 Cent Snack
The marketing behind the snack was a way to reach out to people across all borders, but was especially targeted at children of all classes with the five cent price. The snack's price point proved to be irresistable not only to children, but to the parents with purchasing power as well.
Considering the Joads are dirt poor and can rarely even afford to eat a meal at the end of a day, it is an awe inspiring moment when Pa Joad allows Ruthie and Winfield a special snack for working alonside the family in the fields. For the kids, working all day in the grueling fields alongside their parents was worth the five cents spent on them at the end of the day. This is especially insightful considering that for the workers, 15 cents an hour is a price to be upset about.