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Optimum Nutrition Whey Protein 2.88kg for $119.95 @ Costco Instore
Posted 4/26/2026Source: OzBargain ↗

Optimum Nutrition Whey Protein 2.88kg for $119.95 @ Costco Instore

Health & Beauty

Stock up on your protein supply and save some serious cash with this Costco in-store find! You can grab a massive 2.88kg tub of Optimum Nutrition Gold Standard Whey for just $119.95, which beats the $126.49 online price.

  • Optimum Nutrition Gold Standard 100% Whey (Chocolate 2.88kg or Vanilla 2.75kg)
  • Only $119.95 in-store
  • Pro tip: You might be able to stack even more savings if you use discounted DoorDash gift cards via their platform!

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