In 1950, you could order a "Readi-Cut House" from the Aladdin Com. of Bay City, Michigan. $1492.00 got you a five room house and "every hour you can put in on the construction of your Aladdin home means a saving to you of from $2.00 to $3.00 per hour on its cost."
A house-by-numbers, that's my skill level. And I figure my labor is worth just about $3.00/hour based on my skill sets.