Most of the Kirkland brand products are white-label products made for them by companies that sell competing name-brand products.
Costco has employees that oversee the QC of these white-label products.
Costco has employees that oversee the QC of these white-label products.
Intels high price chips, and low price chips are often the same chip except the low priced one failed quality control and had some of its circuits turned off.
Wikipedia article, as a primer: https://en.wikipedia.org/wiki/Product_binning