Amana, for instance, introduced the first countertop microwave—the Radarange, made in Amana, Iowa—in 1967, priced at $495. Today you can buy a microwave at Walmart for $49 (the equivalent of a $7 price tag on a 1967 microwave)—and almost all the ones you’ll see there, a variety of brands and models, will have been shipped in from someplace where hourly wages have historically been measured in cents rather than dollars.