Penny wise and pound foolish

I wondered that a lot when I was younger and worked retail. I did about 4x the work of the other employees (and it's not like I was trying particularly hard, there just wasn't anything else to do). I often wondered why they didn't pay people like me twice as much, hire half as many, and get twice as much done.

I think the answer is that there are far fewer good employees than you probably think.