Social contract. Social contract, in political philosophy, an actual or hypothetical compact, or agreement, between the ruled and their rulers, defining the rights and duties of each. In primeval times, according to the theory, individuals were born into an anarchic state of nature, which was happy or unhappy according to the particular version.
Typical costs: 1  Technicians typically charge $50-$100 per hour for labor to work on the computer, but this varies by geographical location. 2  Costs for replacement hardware for Macs and PCs vary.  Motherboards range from $50 to more than $1,000 -- the more expensive models offer faster speeds and more ports.
The equipment costs $1500, you charge me $2200. Other materials to do the job cost another $400. So this is implying that the labor to install a one zone ductless is somewhere around $1900, when materials (which include a profit for the installer built in) are subtracted. So at $130/hr, it is 14 hours to do one zone with a very short run.