Paying an upfront annual fee to shop at Costco requires a highly strategic approach to your family’s warehouse trips. It is incredibly easy to walk down the cavernous aisles and overspend on items that do not fit your household. The key to maximizing your membership value is identifying the specific products that offer genuine wholesale price breaks. At the same time, you must avoid specific bulk traps that lead to waste and financial loss. Let me share eight Costco buys that fully justify the annual membership fee, and four items you should always skip.