Are RXBARs Sold At Costco?

Are RXBARs Sold At Costco? Costco also sells large boxes of RXBars, which Sakaida says are very popular. RXBars come in many flavors, including peanut butter chocolate, blueberry, and chocolate sea salt. How much is RXBARs worth? Kellogg is buying protein-bar company RXBar for $600 million. “It was kind of a no-brainer,” says RXBar CEO