Here is a vintage catalog advertisement for a Harris Typewriter. The price of the typewriter was $44.80 in 1916 and the ad is quite detailed as to how the company could offer this high quality typewriter for such a low price.
Here is a black and white clip art version of the typewriter illustration from the ad.
I scanned the original page from the 1916 Sears, Roebuck and Co. catalogue.
Click on images to enlarge.