I've shopped at Costco for nearly a decade. Here are the 8 biggest mistakes I see customers make.
Briefly

If you're a frequent shopper who buys most of your household goods at Costco, it may make sense to upgrade to the executive membership, which costs $130 a year. This membership offers an annual 2% reward on qualifying purchases, up to $1,250, potentially saving you more money in the long run compared to the base option.
The Kirkland Signature line offers high-quality products at a lower price. Products like Kirkland's house-blend coffee, roasted by Starbucks, are often several dollars less than brand-name counterparts. It's essential to do your research to ensure you're choosing the best quality.
Restaurant gift cards at Costco typically cost less than their face value, providing a great opportunity for savings. For instance, a two-pack of California Pizza Kitchen cards costs $80 but offers $100 in restaurant credit, leading to a $20 savings.
Costco has an internal price-matching policy. If an item goes on sale within 30 days of your purchase, you can request a refund for the price difference, which can save you money, especially on higher-priced items.
Read at Business Insider
[
|
]