Even if you're getting a great deal on a cheese, it's only profitable if you use the whole thing. Thankfully, freezing some cheeses can extend their shelf life.

Note that you should only be freezing cheeses that will be baked into a recipe, like pre-shredded or blocks of mozzarella, Monterey Jack, cheddar, provolone, muenster, and Colby.

Avoid freezing cheeses with a high moisture content (like cottage cheese, ricotta, and queso fresco), cheeses that are used fresh (like brie and Gorgonzola), and flavored cheeses.

The Costco app can make your shopping experience easier by letting you create a digital membership card, have access to the Costco savings booklet, and clip coupons.

You can also create a shopping list within the app, pay using the app, look up old receipts, compare gas prices at different warehouses, order your prescriptions, and much more.

Thanks to Costco's 30-day price protection plan, if an item you bought goes on sale later that month, you can ask for a price adjustment on it using your receipt.

Be it an online or in-store buy, you’ll get the price difference back on your credit card. However, this won’t work if you buy an item in-store and then notice it’s cheaper online.

Price tags ending in .97 are on sale, while ones ending in .99 or .09 are regular prices. An asterisk on the tag means it’s a limited stock item and may not be restocked.

A product with a price ending in .88 or .00 is put on sale by that particular store, likely because it's been returned, used as a floor model, or is one of the last items left.

At Costco’s food court, you can wisely snag a deal that's half the price of competing fast food menu items. The $1.50 20-ounce soda and hot dog combo is a good example.

Another solid choice is the $1.99 pizza slice or $9.95 whole 18-inch pie option, and there's no surcharge for selecting pepperoni over cheese. The chicken bake is quite cheap, too.