Many people love to shop at warehouse stores such as Costco or Sam’s Club to be able to purchase items in bulk to help save money. Well, because sometimes those products don’t save you money. GoBankingRates, is trying to help you save money by identifying some items that you should never buy in bulk. Those are the items you should be thinking about when trying to buy in bulk to save money. 8 Items You Don't Need to Buy in Bulk Most people believe that buying items in bulk can save you money, but that isn't always the case.