At the grocery store it would be extremely useful to understand where money is going related to other food groups (diary is 10% more). At the garage or clothin

At the grocery store it would be extremely useful to understand where money is going related to other food groups (diary is 10% more). At the garage or clothing store not very useful because the entire purchase is a good group but how much you are paying for meat could help you decide to buy it elsewhere but allow you to keep buying bread.