A Pretty Good Deal

The lamp was finally installed today.  It cost 4x more to install the lamp than the lamp itself cost.  I was told that it was $128. because the guy showed up, then they put on the cost of installing the light.  Pretty good deal.    Sounds like the plumbers rates.  The next time you teachers show up to tutor a student, add $128. because you showed up to the cost of the tutoring fee.  What's good for the plumbers and the electricians is good for the ...(fill in the blank).