Mark J. Perry compares how long it takes to buy an electric kitchen oven in 1966 versus what you could buy today for the same number of hours of labor. See his visual illustration at Living the Good Life: The Good Old Days Are Now.
He translates the cost of an oven in 1966 into the number of hours labor needed to buy it at the average hourly wage then. He figures out the average hourly wage today and figures out what home appliances could be purchased for the same number of hours work. The cost reductions are amazing.