Costco is well-known for its low prices, but you only have access with a paid membership. Until its partnership with one popular app, that is.

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Costco is set to open four stores across the country this week, expanding the wholesale warehouse's footprint. Two stores are set to open in Texas while others will open in Michigan and Massachusetts.

COSTCO ROLLING OUT GAME-CHANGING NEW FEATURE ON MOBILE APP Customers enter a Costco Wholesale Corp. warehouse store in Hawthorne, California, on June 12, 2024. (Patrick T. Fallon/AFP via Getty ...

However, you can use a Mastercard or Discover card at Costco.com and via the Costco app. If you prefer to shop in-store at Costco with a credit card, then make sure you have a Visa-backed credit card.