Costco is known for its bulk savings and unbeatable value—but that doesn’t always mean you’re getting the best price. While some items are absolutely worth buying at Costco, others can quietly cost you more than you’d pay elsewhere. We’ve compared 14 popular Costco groceries with prices at Walmart, Target, Aldi, Trader Joe’s, and Grocery Outlet—and the results might surprise you. Here are the Costco items that aren’t always the bargain they seem.
1. Peanut Butter $11.69/96 oz
Costco’s peanut butter comes in a two-pack, perfect for families or heavy PB lovers. But for budget-conscious shoppers, Walmart often sells comparable brands for less per ounce.
While the quality is solid, Costco’s price-per-ounce is higher than Walmart’s Great Value or store-brand versions—especially during rollbacks.
Nutritional Facts
- Calories 190
- Total Fat 16g
- Carbohydrates 7g
- Sodium 150mg
- Dietary Fiber 2g
- Sugar 3g
- Protein 8g
Ingredients
Roasted peanuts, sugar, hydrogenated vegetable oils (rapeseed, cottonseed, soybean), salt.
Preparation Instructions
Spread on toast, use in sandwiches, or mix into smoothies or oatmeal.
2. Basmati Rice $23.99/20 lb
This long-grain basmati rice is fragrant and fluffy—but not necessarily cheap. Walmart’s Great Value and Royal brands are usually more affordable per pound.
Unless you’re brand loyal, you can shave off several dollars buying similar quality rice elsewhere in smaller or larger bags.
Nutritional Facts
- Calories 160
- Total Fat 0g
- Carbohydrates 36g
- Sodium 0mg
- Dietary Fiber 1g
- Sugar 0g
- Protein 3g
Ingredients
Basmati rice.
Preparation Instructions
Rinse rice, then cook 1 cup rice to 1.5 cups water. Simmer for 15–20 minutes.
3. White Bread $6.1/48 oz
Costco’s white bread packs are ideal for sandwiches, but Walmart often beats the price with its store-brand bread sold individually.
Unless you’re freezing the second loaf, buying smaller quantities at Walmart may cost less and stay fresher.
Nutritional Facts
- Calories 70
- Total Fat 1g
- Carbohydrates 13g
- Sodium 130mg
- Dietary Fiber 1g
- Sugar 2g
- Protein 2g
Ingredients
Enriched wheat flour, sugar, yeast, soybean oil, salt, dough conditioners.
Preparation Instructions
Best for toast, sandwiches, grilled cheese, and French toast.
4. Marinara Sauce $14.74/40 oz
Costco’s multi-pack marinara is tasty and versatile, but Target regularly offers cheaper per-ounce options—especially with store brand sauces.
Unless you need to stock up, you’ll likely save by purchasing one or two jars at a time from Target.
Nutritional Facts
- Calories 70
- Total Fat 2g
- Carbohydrates 10g
- Sodium 420mg
- Dietary Fiber 2g
- Sugar 5g
- Protein 2g
Ingredients
Tomatoes, olive oil, garlic, onion, basil, salt, pepper.
Preparation Instructions
Simmer with pasta, meatballs, or pour over chicken for a quick dinner.
5. Chicken Thighs $22.33/11 lbs
Costco’s bulk chicken thighs come in individually wrapped packs—but Aldi often offers fresher options for less per pound.
Unless you’re feeding a crowd or freezing multiple meals, Aldi can be a better value with easier portion control.
Nutritional Facts
- Calories 220
- Total Fat 17g
- Carbohydrates 0g
- Sodium 90mg
- Dietary Fiber 0g
- Sugar 0g
- Protein 20g
Ingredients
Raw chicken thighs.
Preparation Instructions
Season and grill, bake at 375°F for 35–40 minutes, or pan-fry for a quick dinner.
6. Frozen Vegetables $12.47/5.5 lb bag
Great for stir-fries or side dishes, Costco’s bulk frozen veggie mix is a freezer staple—but Walmart and Grocery Outlet offer better deals.
If you don’t need giant bags, buying smaller portions elsewhere helps avoid waste—and saves money.
Nutritional Facts
- Calories 45
- Total Fat 0g
- Carbohydrates 10g
- Sodium 15mg
- Dietary Fiber 3g
- Sugar 3g
- Protein 2g
Ingredients
Blend of broccoli, carrots, green beans, peas, and corn.
Preparation Instructions
Steam, microwave, or stir-fry with olive oil and seasoning.
7. Greek Yogurt $7.71/48 oz
Costco’s Kirkland Greek yogurt is thick, creamy, and protein-packed. But Target’s store brand usually costs less per ounce.
Smaller sizes at other retailers can offer better deals—plus, you avoid potential waste before it expires.
Nutritional Facts
- Calories 100
- Total Fat 0g
- Carbohydrates 6g
- Sodium 60mg
- Dietary Fiber 0g
- Sugar 4g
- Protein 17g
Ingredients
Cultured pasteurized skim milk, live active cultures.
Preparation Instructions
Enjoy on its own, with fruit, or as a base for smoothies and dips.
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8. Salmon $15.09/pound
Costco’s farmed Atlantic salmon is popular for its freshness, but Trader Joe’s often has competitive pricing on smaller fillets.
Unless you’re buying in bulk, Trader Joe’s is a solid alternative with less upfront cost per portion.
Nutritional Facts
- Calories 240
- Total Fat 14g
- Carbohydrates 0g
- Sodium 75mg
- Dietary Fiber 0g
- Sugar 0g
- Protein 23g
Ingredients
Fresh Atlantic salmon, may contain salt.
Preparation Instructions
Grill, pan-sear, or bake at 400°F for 12–15 minutes with lemon and herbs.
9. Milk $7.00/2 gallons
Costco sells milk in a 2-gallon bundle, but both Target and Walmart offer better pricing—even for name brands.
Milk is cheaper per gallon at most other major retailers. Buying only what you need also reduces spoilage.
Nutritional Facts
- Calories 150
- Total Fat 8g
- Carbohydrates 12g
- Sodium 120mg
- Dietary Fiber 0g
- Sugar 12g
- Protein 8g
Ingredients
Whole milk, vitamin D3.
Preparation Instructions
Keep refrigerated. Use within 7 days of opening.
10. Ground Beef $35.43/6.26 lb
Costco’s 88% lean ground beef comes in large packs—ideal for big-batch cooking—but Walmart’s per-pound price is often lower.
Unless you’re freezing multiple portions, Walmart provides more flexibility and value.
Nutritional Facts
- Calories 250
- Total Fat 20g
- Carbohydrates 0g
- Sodium 75mg
- Dietary Fiber 0g
- Sugar 0g
- Protein 19g
Ingredients
Ground beef (88% lean, 12% fat).
Preparation Instructions
Cook in skillet over medium heat until browned. Use in tacos, pasta, or burgers.
11. Spaghetti $14.74/6 lb
Costco offers a bulk pack of spaghetti pasta that’s perfect for feeding a crowd or stocking a pantry. However, Walmart often sells comparable pasta for less—especially when purchased as single or twin packs.
Unless you’re cooking for a large household, buying in smaller quantities at Walmart typically costs less per pound and reduces the risk of waste.
Nutritional Facts
- Calories 200
- Total Fat 1g
- Carbohydrates 42g
- Sodium 0mg
- Dietary Fiber 2g
- Sugar 1g
- Protein 7g
Ingredients
Durum wheat semolina.
Preparation Instructions
Boil 4–6 quarts of water, add pasta, and cook for 8–10 minutes until al dente. Drain and serve with sauce or olive oil.
12. Pineapples $3.39/each
Costco’s pineapples are known for their size and sweetness, but Target frequently sells equally sweet, smaller pineapples for less—especially during seasonal sales.
Unless you’re feeding a crowd, Target’s individual pineapples can offer better value without the commitment of Costco’s larger size.
Nutritional Facts
- Calories 82
- Total Fat 0g
- Carbohydrates 22g
- Sodium 2mg
- Dietary Fiber 2g
- Sugar 16g
- Protein 1g
Ingredients
Fresh pineapple.
Preparation Instructions
Slice and core. Enjoy raw, grilled, or blended into smoothies.
13. On-the-Vine Tomatoes $7.99/4 lb
These vine-ripened tomatoes are vibrant and juicy, perfect for salads, sauces, or slicing. However, Walmart typically offers lower per-pound prices on similarly fresh tomatoes.
You can find equal freshness for less, and buy only what you need—cutting cost and waste.
Nutritional Facts
- Calories 22
- Total Fat 0g
- Carbohydrates 5g
- Sodium 6mg
- Dietary Fiber 1.5g
- Sugar 3g
- Protein 1g
Ingredients
Fresh tomatoes on the vine.
Preparation Instructions
Wash thoroughly. Slice for sandwiches, dice for salsa, or roast for sauces.
14. Boneless Skinless Chicken Breast $33.49/10 lb
Costco’s frozen chicken breast is convenient for meal prep, but Walmart, Grocery Outlet, and Target consistently offer better prices on smaller packs.
Unless you have freezer space to spare, buying only what you need from other stores can save money and space.
Nutritional Facts
- Calories 120
- Total Fat 2.5g
- Carbohydrates 0g
- Sodium 75mg
- Dietary Fiber 0g
- Sugar 0g
- Protein 24g
Ingredients
Boneless, skinless chicken breast.
Preparation Instructions
Thaw and bake at 375°F for 25–30 minutes, grill, or slice for stir-fry or salads.
Final Thought
While Costco offers convenience and quantity, it’s not always the cheapest option. From pantry staples to fresh produce and meats, savvy shoppers can often find better prices by buying smaller portions at stores like Walmart, Target, Aldi, Trader Joe’s, and Grocery Outlet. Always compare per-unit costs to make sure you’re getting the best deal—your wallet will thank you.
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