Let’s be real—Costco is loaded with obvious deals: giant packs, bulk savings, and member-only markdowns. But if you only stick to the basics, you’re missing out on hidden gems that savvy shoppers swear by.
These 12 secret deals are the kind of finds fans don’t want everyone to know about. Lucky for you, we’re spilling the secrets.
1. Kirkland Signature Basil Pesto $11.79 (22 oz)
Made in Italy with Genovese basil, this vibrant pesto packs serious flavor. It’s a go-to for pastas, sandwiches, pizza bases, or even dolloped on grilled veggies.
Nutritional Facts (per 1/4 cup):
- Calories: 330
- Total Fat: 34g
- Carbohydrates: 3g
- Sodium: 600mg
- Dietary Fiber: 1g
- Sugar: 1g
- Protein: 4g
Ingredients:
Basil, Olive Oil, Grana Padano Cheese, Pecorino Romano Cheese, Garlic, Pine Nuts, Salt.
Preparation Instructions:
Stir before using. Serve cold or gently warm. Store in the fridge after opening.
2. EltaMD UV Sport Broad-Spectrum Sunscreen $52.99 (2-pack)
Dermatologist-recommended and water-resistant up to 80 minutes, this SPF 50 sunscreen is non-greasy and perfect for outdoor sports or beach days. It’s rarely found at this price elsewhere.
Key Features:
- SPF 50 broad-spectrum UVA/UVB protection
- Water-resistant (80 mins)
- Fragrance-free, oil-free
- Safe for sensitive skin
Materials:
Active Ingredients: Zinc Oxide 9.0%, Octinoxate 7.5%.
Care/Use Instructions:
Apply 15 minutes before sun exposure. Reapply after swimming, sweating, or towel drying.
3. Kirkland Signature Organic Extra Virgin Olive Oil $20.99 (2 L)
Cold-pressed from Italian-grown olives, this organic EVOO is smooth, peppery, and ideal for cooking, salad dressings, or dipping fresh bread.
Nutritional Facts (per tbsp):
- Calories: 120
- Total Fat: 14g
- Carbohydrates: 0g
- Sodium: 0mg
- Dietary Fiber: 0g
- Sugar: 0g
- Protein: 0g
Ingredients:
100% Organic Extra Virgin Olive Oil.
Preparation Instructions:
Store in a cool, dark place. Use for sautéing, drizzling, or cold dishes.
4. Kirkland Signature Dark Chocolate Covered Mangoes $11.99 (20.46 oz)
These dried mango strips are dipped in rich dark chocolate for the ultimate sweet-and-tangy snack. Think tropical vacation meets dessert bar.
Nutritional Facts (per 3 pieces):
- Calories: 140
- Total Fat: 6g
- Carbohydrates: 21g
- Sodium: 0mg
- Dietary Fiber: 2g
- Sugar: 17g
- Protein: 1g
Ingredients:
Dried Mango, Dark Chocolate (Sugar, Cocoa Mass, Cocoa Butter, Lecithin, Vanilla).
Preparation Instructions:
No prep needed. Keep in a cool, dry place.
5. Kirkland Signature Organic Pure Maple Syrup $14.99 (33.8 oz)
Harvested in Canada and 100% Grade A Amber Rich, this maple syrup is rich, smooth, and surprisingly affordable for its purity and volume.
Nutritional Facts (per 1/4 cup):
- Calories: 210
- Total Fat: 0g
- Carbohydrates: 53g
- Sodium: 5mg
- Dietary Fiber: 0g
- Sugar: 50g
- Protein: 0g
Ingredients:
Organic Pure Maple Syrup.
Preparation Instructions:
Shake before using. Refrigerate after opening.
6. Feit Electric LED Bulbs $36.99 (18-pack)
These energy-efficient LED bulbs last up to 10 years and cost a fraction of what you’d pay at a hardware store. Bright, reliable, and wallet-friendly.
Key Features:
- 10,000-hour lifespan
- 800 lumens per bulb
- Soft white (2700K)
- Energy Star certified
Materials:
Plastic and aluminum housing with LED chips.
Care/Use Instructions:
Fits standard E26 base. Do not use with dimmers unless specified.
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7. Kirkland Signature Full Synthetic Motor Oil $35.99 (6-pack, 1 qt each)
This high-performance oil meets or exceeds many top name brands and is perfect for DIY oil changers. Great value for vehicles that require SAE 5W-30 or 0W-20.
Key Features:
- API SN Plus, ILSAC GF-6A certified
- Protects against sludge and wear
- Works in extreme hot or cold temps
Materials:
100% synthetic base oil with performance additives.
Care/Use Instructions:
Refer to vehicle manufacturer for oil type and change intervals.
8. Kirkland Signature Parmigiano Reggiano $18.99/lb (avg. 1.5 lb wedge)
Aged 24 months in Italy and certified DOP, this real-deal Parm is nutty, complex, and underpriced for its quality. Grate it, shave it, or snack on it.
Nutritional Facts (1 oz):
- Calories: 110
- Total Fat: 7g
- Carbohydrates: 1g
- Sodium: 180mg
- Dietary Fiber: 0g
- Sugar: 0g
- Protein: 9g
Ingredients:
Cow’s Milk, Salt, Rennet.
Preparation Instructions:
Store in the fridge. Bring to room temp before serving for best flavor.
9. Hot Dog and Soda Combo $1.50
It’s not just a food court legend—it’s an institution. For $1.50, you get a juicy all-beef hot dog and a 20 oz fountain drink with free refills. This deal hasn’t budged in decades.
Nutritional Facts (Hot Dog Only):
- Calories: 540
- Total Fat: 32g
- Carbohydrates: 46g
- Sodium: 1,520mg
- Dietary Fiber: 2g
- Sugar: 5g
- Protein: 20g
Ingredients:
Beef, Water, Salt, Garlic, Spices, Corn Syrup, Bun (Wheat Flour, Sugar, Yeast).
Preparation Instructions:
Served hot at the Costco food court. No prep needed—just enjoy.
10. Kirkland Signature Moisture Shampoo $11.99 (33.8 oz)
This salon-quality shampoo rivals luxury brands for a fraction of the cost. It hydrates without heaviness and smells fresh and clean.
Key Features:
- Sulfate-free
- Safe for color-treated hair
- Contains amino acids and vitamin E
Ingredients:
Water, Aloe Leaf Juice, Sodium Lauroyl Methyl Isethionate, Dimethicone, Panthenol, Hydrolyzed Wheat Protein.
Care/Use Instructions:
Apply to wet hair. Lather and rinse. Follow with conditioner.
11. Kirkland Signature Ultra Clean Detergent $19.99 (194 fl oz)
Tough on stains and gentle on clothes, this powerful detergent often ranks higher than big-name competitors in performance and cost per load.
Key Features:
- HE compatible
- 126 loads per bottle
- Stain-fighting enzymes
- Clean, fresh scent
Ingredients:
Cleaning agents, surfactants, stabilizers, fragrance.
Care/Use Instructions:
Use 1–2 pumps depending on load size. Works in hot or cold water.
12. Pure Vanilla Extract $13.99 (16 fl oz)
Real vanilla extract—no imitation here. This large bottle is a steal for bakers, offering rich, smooth flavor perfect for cookies, cakes, and frostings.
Nutritional Facts (per tsp):
- Calories: 12
- Total Fat: 0g
- Carbohydrates: 0.5g
- Sodium: 0mg
- Dietary Fiber: 0g
- Sugar: 0g
- Protein: 0g
Ingredients:
Vanilla Bean Extractives in Water, Alcohol (35%).
Preparation Instructions:
Shake well. Use in baking, drinks, or whipped cream.
Final Thoughts
These insider-approved Costco deals might not be front-and-center, but they’re totally worth seeking out. Whether you’re stocking the pantry, restocking essentials, or just in for the hot dog, you’ll be glad to add these secret-value superstars to your next Costco haul. Don’t sleep on them—once word gets out, they may not stay under the radar for long!
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