Opportunity gain

This is especially with dry foods and foods that have a long shelve life. Things are much cheaper when they are bought in bulk, and you will find more offers on bulk items than on single ones. It is also cheaper to transport many items at once than to go ton the store everyday or every week. Remember, saving money is not only in the price at which you buy them, but also in the effort, time and money you spend to get them to your house.