Here is a list of books that were recommended to me by our fabulous librarian. They all focus on goods and services, having money, or simply buying stuff. Exactly what I needed to get the kids' brains around our store!
Alexander, Who Used to Be Rich Last Sunday by Judith Viorst
Something Good by Robert Munsch
Money, Money, Honey Bunny! by Marilyn Sadler
Bunny Money by Rosemary Wells
Goat and Donkey in Strawberry Sunglasses by Simon Puttock and Russell Julian.