One of the biotech industry’s favorite arguments against GMO labeling is that it will be costly for small retailers and consumers. As if Monsanto actually cares about your economic well-being?

Playing to consumers’ fears of higher food costs makes good strategic sense, especially in tough economic times. But the argument doesn’t hold water. Trader Joe’s, a multi-billion dollar retailer of organic and natural foods, second in size only to Whole Foods Market, verifies that its private-label products are GMO-free. How? By using a system that involves chain-of-custody, legally binding affidavits. It’s the same system other manufacturers and retailers use for rBGH-free, trans fat-free, fair trade and country-of-origin. It works. And it doesn’t cost consumers a dime.