Costco online has ON Performance Whey Protein Isolate, Chocolate, Stevia Sweetened ("Natural"), 3.35 lb 40 serving bags for $37.99 with $6 off, bringing it to $31.99 delivered, good for those who want it delivered or don't have a Costco nearby. The warehouse price is normally $29.99 and, with $6 off, that brings it down to $23.99 in-warehouse.
https://www.costco.com/optimum-nu...96787.html
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I like the previous version of the on isolate sold at Costco better than this one..