Buying in bulk is not always cheaper! Do the math. Compare the amounts you are paying per item. Walmart and many other grocers do the math for you with most of their products. The shelf labels says the full price of the product and then in the corner the label shows the price per ounce or item.
Take other things into consideration as well. Will you be able to eat or use that much product before it goes bad? Will it fit in your storage space?
On the flip side
Sometimes buying in bulk is much cheaper! Do the math.