I have two identical projects; new school buildings within the same school district. The projects are located within my area of operations and close to both leaders' homes. Both men lead similar crews such that one could not differentiate the outcomes of one crew from the other based on individual or group abilities.
Now leader one is quite mercenary hard working and well loved by his crew. He wastes no effort in all that he does toward goal accomplishment, completing tile work. He harbors no wasted effort in his crew and similarly he is always teaching his speed tricks, and how to focus on completion as opposed to quality. As you can imagine, his work is not without defect. At the same time he is ever professional and expects the same from his crew, so his quality control is still quite tight. Its just that he has developed an intuitive understanding of where he and his crew may bend on quality
Leader two on the other hand is more quality oriented and demands near perfection from his crew. He is ever critical about the work of his fellows. Rarely gives positive feedback.
Leader one uses 400 mandays to complete his school, leader two 500 mandays. Leader two has a zero-punch list, he requires no additional effort going back to fix his work, while leader one requires 20 mandays of rework to remedy defects in his work all of which are but minor nuisances.
The 80 manday difference is what I call the perfection premium. Can you afford it?