Payment and working

Day 2,470, 11:04 • Published in Chile Italy • by Ashgers22

How is possible that a q1 House cost just 80 CLP?
To make one you need a person working for 3 days and a bit.
The cost of a day worker is 40 CLP.....
So when you make the price it should be more than 120 CLP!!!!
If you consider that you need raw material and a bit to make the q1 house it should be at the end 150 CLP.
I really don't understend how to make profit with it, and it's also cause you cannot work in your own raw material and q1 house companies!!!
Please help me in make a little also a 0.1 CLP for house that i wanna sell!