Costco is known for its buy-in-bulk discounts and warehouse savings, but it would be a mistake to believe everything on its shelves is offered at an automatic bargain price.
To make the most of your Costco membership without buying into expensive downsides, we recommend taking the following 12 items off your list entirely. You’re almost guaranteed to find them at a better price at other stores.
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Milk
Costco’s best deals stem from its bulk-discount pricing model: When you buy a large number of goods at wholesale prices, you avoid pricey mark-ups and can pocket the savings. Alas, individual units sold at warehouses don’t come with the same savings, including perishable individual products like milk.
Depending on where you are in the country, a gallon of Costco milk costs nearly double that of a gallon of milk from Walmart.
Shredded cheese
How fast are you planning on eating that massive bag of Costco shredded cheese? Hopefully pretty quick, or else the bag will start to mold, which effectively means throwing money down the drain.
If you’re gearing up for a cheese-heavy feast, you’ll probably be getting a deal on Costco’s buy-in-bulk bags of shredded cheese. Otherwise, you’ll save more by going with a smaller bag from a typical grocery store that you can use up within a short period of time. Alternatively, grab a huge Costco bag of cheese — just make sure to freeze whatever you don’t use within a week or so.
Fresh vegetables
Costco’s fresh produce can seem like a bargain when looking solely at the volume ratio to price. But unless you’re planning to eat that entire three-pound bag of green beans within the next five to seven days, you’ll probably end up throwing away most of the bag when it starts to rot.
Unless you have concrete, immediate plans for those buy-in-bulk fresh vegetables (like an upcoming holiday celebration), stick to Costco’s well-priced frozen vegetable bags instead.
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Sugar
Pantry staples like sugar and flour are expected to last a long time, so they’re often sold in bigger bags, even at standard grocery stores. As a result, you shouldn’t expect to find huge savings on bulk pantry staples at Costco. A ten-pound bag of sugar, for instance, might be cheaper at Walmart compared to the same product at Costco.
Cooking oil
As soon as you break the seal on a bottle of olive or canola oil, you have a few months to use it up before the oil goes rancid. Unless you cook with large amounts of oil on a daily or weekly basis, Costco’s huge oil bottles might go bad faster than you can use them.
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Diapers
Depending on the brand, you could save some money buying bulk diapers at Costco rather than smaller boxes at Walmart or Amazon. But make sure you check the per-unit price when buying diapers — some brands are cheaper on Amazon compared to Costco’s generic Kirkland brand.
And make sure to account for how quickly your baby grows. You could move out of the newborn diaper size before finishing out that entire 200-count box of Costco diapers.
Books
Remember what we said earlier about how individually priced items aren’t always the greatest deal at bulk warehouses? The rule applies equally to paperback books as perishable produce. While you might find a bestselling book at Costco for a reasonable price, you’ll get a better selection of books online or at your local bookstore.
Bananas, avocados and peaches
Many fruits continue to ripen well after they’re picked, which means you’ll have to eat them quickly to enjoy them before they rot.
Unless you’re feeding a big household, it’s hard to power your way through several pounds of Costco fruit — especially since one ultra-ripe piece of fruit hidden in the massive bag can spur the rest of the bag to ripen faster.
Diamond engagement rings
Don’t get us wrong — Costco’s diamond engagement rings can be a great choice for a couple looking for a fast, affordable, and high-quality ring option. But since Costco doesn’t specialize in jewelry, you’ll have to perform most of the research yourself to ensure you’re getting a high-quality diamond that’s actually worth the price.
Plus, you won’t get the resizing guarantees or free lifelong cleanings you’d get from an actual jeweler. You’d have to pay for those services yourself, and the costs can add up over time.
Get a protection plan on all your appliances
Did you know if your air conditioner stops working, your homeowner’s insurance won’t cover it? Same with plumbing, electrical issues, appliances, and more.
Whether or not you’re a new homeowner, a home warranty from Choice Home Warranty could pick up the slack where insurance falls short and protect you against surprise expenses. If a covered system in your home breaks, you can call their hotline 24/7 to get it repaired.
For a limited time, you can get your first month free with a Single Payment home warranty plan.
Holiday decor
Holiday decor isn’t usually available year-round, so there’s a sense of urgency to snap up decorations as soon as they hit the shelves. But make sure to compare the costs of fake trees, Christmas lights, and holiday garlands before buying them at Costco. Many customers report paying much more for holiday goods at Costco than they did at non-warehouse stores like Home Goods.
Spices and seasonings
The faster you use ground spices, the better the flavor quality will be, so buying a massive bottle of cinnamon or nutmeg is rarely worth it. Feel free to stick to buying smaller bottles of spices and seasonings at your local grocery store rather than Costco.
Ground coffee
Kirkland Signature coffee has a great flavor and is sold at a reasonable price, but ground coffee doesn’t keep nearly as long as whole beans do, and the loss of flavor is super noticeable over time. In other words, if you value your coffee’s quality, don’t buy ground coffee from Costco (though it could be a good pick if you have a big group of adults to caffeinate in the near future).
Bottom line
Your Costco card can help you secure big savings — but only if you know how to capitalize on the best deals while passing on less-than-impressive prices.
Remember that comparing the cost of items at different stores to find the best price is a crucial part of bargain hunting, so determining items to snag at Costco (and which to find elsewhere) will help you avoid throwing away money at the wholesaler.
Lucrative, Flat-Rate Cash Rewards
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Wells Fargo Active Cash® Card
Current Offer
$200 cash rewards bonus after spending $500 in purchases in the first 3 months
Annual Fee
$0
Rewards Rate
Earn unlimited 2% cash rewards on purchases
Benefits
- Low spend threshold for its welcome offer — $200 cash rewards bonus after spending $500 in purchases in the first 3 months
- Cell phone protection benefit (subject to a $25 deductible)
- Can redeem rewards at an ATM for literal cash
Drawbacks
- Foreign transaction fee of 3%
- No bonus categories
- Select “Apply Now” to take advantage of this specific offer and learn more about product features, terms and conditions.
- Earn a $200 cash rewards bonus after spending $500 in purchases in the first 3 months.
- Earn unlimited 2% cash rewards on purchases.
- 0% intro APR for 12 months from account opening on purchases and qualifying balance transfers. 19.74%, 24.74%, or 29.74% Variable APR thereafter; balance transfers made within 120 days qualify for the intro rate and fee of 3% then a BT fee of up to 5%, min: $5.
- $0 annual fee.
- No categories to track or remember and cash rewards don’t expire as long as your account remains open.
- Find tickets to top sports and entertainment events, book travel, make dinner reservations and more with your complimentary 24/7 Visa Signature® Concierge.
- Up to $600 of cell phone protection against damage or theft. Subject to a $25 deductible.
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