Produce
While Costco sells more organic produce than Whole Foods, don’t be tempted to buy more than you can eat. As with all perishable food, there’s only a certain amount of time between purchase and consumption that the item stays fresh. Though buying in bulk may seem like the cheaper option, spending less for more food often ends up hurting your wallet more than helping it. Roughly 25% of fruits of vegetables end up thrown away according to researchers, leaving the average household with about $590 per year in the garbage rather than their pockets.