4 Aldi staples that beat Costco prices this summer

Bigger packages don't always mean bigger savings.

Costco is often associated with bargain shopping, but buying in bulk doesn't automatically mean you're getting the lowest price. In several grocery categories, Aldi's everyday prices come in lower on a cost-per-ounce basis.

Heating Up: Aldi vs. Walmart: Which Store Has the Better Prices on Summer Basics?

Start Earning: 9 Unusual Ways To Make Extra Money (That Actually Work)

Here are four Aldi finds that currently cost less than comparable products at Costco.

Check Out: The Best Aldi Buys for the Money Right Now

Table Salt

Costco: Kirkland Signature Pure Sea Salt

• Price: $3.99 for 30 ounces

• Cost per ounce: 13 cents

Aldi: Stonemill Iodized Table Salt

• Price: $0.75 for 26 ounces

• Cost per ounce: 3 cents

If you're looking for everyday table salt, Aldi delivers a significantly lower cost per ounce. Costco's version comes in a convenient shaker, but budget-focused shoppers will likely find better value at Aldi. Yes, the Kirkland version is sea salt, but it's also the closest buy to table salt you'll find at the wholesaler.

Marinara Sauce

Costco: Kirkland Signature Organic Tuscan Marinara

• Price: $12.47 for three 24-ounce jars

• Cost per ounce: 17 cents

Aldi: Simply Nature Organic Marinara Pasta Sauce

• Price: $2.19 for 25 ounces

• Cost per ounce: 9 cents

Organic pantry staples can be expensive, which makes Aldi's marinara stand out. On a per-ounce basis, it costs almost half as much as Costco's comparable organic sauce.

Rolled Oats

Costco: One Degree Gluten-Free Organic Rolled Oats

• Price: $12.47 for 80 ounces

• Cost per ounce: 15 cents

Aldi: Millville Old Fashioned Oats

• Price: $3.85 for 42 ounces

• Cost per ounce: 9 cents

For oatmeal, baking or meal prep, Aldi offers one of the biggest pricing advantages in this comparison, with a cost per ounce that's substantially lower than Costco's.

Frozen Mixed Vegetables

Costco: Kirkland Signature Stir-Fry Vegetable Blend

• Price: $12.02 for a 5.5-pound bag

• Cost per ounce: 14 cents

Aldi: Season's Choice Steamable Frozen Mixed Vegetables

• Price: $1.09 for 12 ounces

• Cost per ounce: 9 cents

Frozen vegetables are often considered a bulk-buy staple, but this comparison shows that larger packages don't always translate to better value.

Costco can be a great place to save, but it isn't always the cheapest option. For staples like salt, oats, marinara sauce and frozen vegetables, Aldi currently offers lower per-ounce prices, making it worth comparing stores before stocking up.

Editor’s note: Prices and availability are subject to change.

This article was provided by MoneyLion.com for informational purposes only and should not be construed as financial, legal or tax advice.

More From MoneyLion:

• 10 Things You Must Do When Your Savings Reach $50,000

• 7 Old Navy Summer Staples That Are Secretly High-Quality

• These 5 Smart Dollar Tree Buys Will Make Costco Shoppers Envious

• Discover a Smarter Way to Keep Unexpected Expenses From Derailing Your Budget