what’s the margin you reckon on that $160/hr your car mechanic is charging you? human labor is not that expensive, the margins of business employing human labor are. I recently needed a plumber, called up a company, plumber showed up, etc. got an estimate from the company which was outrageous. I was expecting this so I got plumber’s number. called him and asked him if he’d do the job for 1/2 the price - win-win.