Sears sold up to 75,000 complete houses by mail-order between 1908 and 1940. You picked a model for $360 to $2,890, and a railroad boxcar arrived with 30,000 pre-cut pieces, 750 pounds of nails, 27 gallons of paint, and a 75-page manual. An estimated 70% are still standing, built by the company that later failed to adapt to e-commerce.